Dr. Sara Ash Professor
Office:Correll Science Complex B119

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Dr. Sara Ash is an alumna of Cumberland College, having graduated with a B.S. in Biology in 1993. At Texas A&M University, she studied Wildlife and Fisheries Sciences, earning an M.S. in 1995 and a Ph.D. in 2001. She returned to Cumberland College in 2000, joining the faculty as a Wildlife Biologist.

In January 2000, while a graduate teaching assistant at Texas A&M University, Dr. Ash was presented with the Vice Chancellor’s Award for Excellence in Graduate Teaching in the College of Agriculture and Life Sciences. She was also designated Outstanding Doctoral Student in Wildlife and Fisheries Sciences.

Dr. Ash continues active research in the areas of wildlife ecology and behavior. Most recently, she has been studying the behavior and ecological impact of feral and urban stray cats.

Courses Taught

BIOL 133 Introduction to Population Biology
BIOL 246 Biodiversity
BIOL 431 Conservation Biology
BIOL 448 Ecology
BIOL 460 Tropical Ecology and Conservation: Belize
BIOL 495 Senior Seminar
Publications, Presentations and Research

2000. Behavior and ecology of TTVAR managed free-ranging domestic cats. Texas Conference on Feral Cats, Dallas TX.

2000. Intraspecific spatial dynamics of free-ranging domestic cats (Felix Catus) managed with the TTVAR method. The Wildlife Society Texas Chapter Annual Meeting, San Angelo, TX.

Steen-Ash, S.J., 1999. Intraspecific spatial dynamics of urban stray cats. Proceedings of the 4th International Symposium on Urban Wildlife Conservation.

1999. Intraspecific spatial dynamics of urban stray cats. 4th International Symposium on Urban Wildlife Conservation, Tucson, AZ.

Adams, C.E. & S.J. Steen, 1998. Texas females who hunt. Wildlife Society Bulletin, 25(4): 796-802.

1997. Characteristics of gray squirrel release sites selected by Kentucky nuisance wildlife control operators. 8th Eastern Wildlife Damage Management Conference. Roanoke, VA.

Dr. Leif Deyrup Assistant Professor
Office:Correll Science Complex B116

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Dr. Leif D. Deyrup graduated from Stetson University with a B.S. in biology and psychology in 2001, and a PhD in Entomology from the University of Georgia in 2005. While graduate teaching, he won both the Departmental graduate teaching award and an award for teaching excellence from the UGA Graduate School. He also won the Sigma Xi outstanding dissertation for his PhD work. After graduating, he was the Medical Entomologist for the state of Maine for two years and then moved into teaching for the University of the Cumberlands in 2008.


BIOL130 General Biology Lecture
BIOL133 Introduction to Population Biology
BIOL246 Biodiversity
BIOL342 Parasitology
BIOL347 Invertebrate Zoology
BIOL495 Senior Seminar

Most of Dr. Deyrup’s research has been in the evolution of behavior, physiological behavior and the biology of wasps. His current work is focused on behavioral ecology, evolution, community ecology and local invertebrate fauna. His research interests provide many opportunities for undergraduate students. In addition, he currently conducts research at the Archbold Biological Station, research institution with a special mission to study an endangered habitat called Florida scrub.


Matthews, R. W., J. M. Gonzalez, J. Matthews and L. D. Deyrup. 2009. Biology of the parasitoid Melittobia (Hymenoptera: Eulophidae). Annual Review of Entomology. 54:251-266
Deyrup, M., and L. Deyrup. Flower visitation by adult shore flies at an inland site in Florida (Diptera: Ephydridae). Florida Entomologist. 93:504-507
Matthews R. W., and Deyrup L. D. 2008. Female fighting and host competition among four sympatric species of Melittobia (Hymenoptera: Eulophidae). Great Lakes Entomologist. 46:52-62
Foss K., and Deyrup L. D. New Record of Psorophora ciliate for Maine. The Journal of the American Mosquito Control Association. 23: 476-477
Deyrup L. D., and R. W. Matthews. 2007. Examining the Relatedness of Behaviors Through Experimentation: Switching on and off Chewing and Feeding Behavior in A Parasitic Wasp. Journal of Ethology. 25: 205-208
Deyrup L. D., and R. W. Matthews. 2007. Escape Chewing in Response to Alkaline Gland and Venom Reservoir Marked Spots and Cross-Attractancy of milked venom across species groups In a Genus of Parasitic Wasp, Melittobia (Hymenoptera: Eulophidae). Journal of Hymenoptera Research. 16: 7-10
Deyrup, L. D., R. W. Matthews, and M. Deyrup. 2006. Feeding and Siblicidal Cannibalism in a Male Parasitic Wasp (Hymenoptera: Eulophidae). Florida Entomologist. 89: 135-140
Deyrup L. D., D. B. Rivers, and R. W. Matthews. 2006. Venom from the ectoparasitic wasp Melittobia digitata Dahms (Hymenoptera: Eulophidae) induces paralysis and developmental delay in natural and factitious hosts. Annals of the Entomological Society of America 99: 1199-1205
Deyrup, L. D. 2006. Cooperative Exit Hole Chewing in Dibrachys pelos (Hymenoptera: Pteromalidae), and its Possible Implications. Journal of Entomological Science 41: 264-265
Deyrup, L. D. R. W. Matthews, and J. M. González. 2005. Cooperative chewing in Melittobia digitata Dahms, a parasitoid wasp, is stimulated by structural cues and a pheromone in crude venom extract. Journal of Insect Behavior 18: 293-304
Matthews, R. W., L. D. Deyrup, and J. M. González . 2005. Increased Male Sex ratio among Brachypterous Progeny in Melittobia femorata, a Sib-Mating Parasitoid Wasp (Hymenoptera: Eulophidae). Insect Science. Insect Science 12: 419-424
Deyrup, L. D., M. Deyrup, and R. W. Matthews. 2003. Paralyzation and developmental delay of a factitious host by Melittobia digitata (Hymenoptera: Eulophidae). Journal of Entomological Science 38: 703-705
Deyrup, L. D., and R. W. Matthews. 2003. A simple technique for milking the venom of a small parasitic wasp, Melittobia digitata (Hymenoptera : Eulophidae). Toxicon 42: 217-218
Deyrup, L. D., and R. W. Matthews. 2003. Host preference and utilization by Melittobia digitata (Hymenoptera: Eulophidae) in relation to mating status. Journal of Entomological Science 38: 682-687
King, C. T., L. D. Deyrup, S. E. Dodson, K. E. Galvin, M. Garcea, and A. C. Spector. 2003. Effects of gustatory nerve transection and regeneration on quinine-stimulated Fos-like immunoreactivity in the parabrachial nucleus of the rat. Journal of Comparative Neurology 465: 296-308

Deyrup, L.D. and H. Swanson. 2006. Patterns in the system: Cycles of mosquito-borne disease. October 2006 Maine Epi-gram. Reprinted in Maine Entomologist 10: 1,4
Deyrup, L.D. 2006. Attack of the seed bugs. Maine Entomologist 10: 3
Deyrup, L.D. 2006. Mosquito surveillance coordinator report of mosquito-borne disease for Maine 2006. Division of Infectious Disease, Maine Center for Disease Control and Prevention. 17pp
Deyrup, L.D. and C. Lubelczyk . 2007. The effect of dragonflies on mosquitoes and mosquito-borne disease. Maine Entomologist 12: 4-5
Deyrup, L.D. Babesiosis; Ehrlichiosis; Malaria, imported; West Nile virus, Avian, Equine & Mosquitoes; Eastern Equine Encephalitis. 2007. IN: Reportable Infectious Diseases in Maine, 2006 Summary (Edited by Tina Bastian and Amy Robbins). Division of Infectious Disease, Maine Center for Disease Control and Prevention: p.80-85

Dr. Heather Eisler Assistant Professor
Office:Correll Science Complex

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Dr. Heather Eisler graduated from the University of Northern Colorado with a BA in Chemistry and Biology in 1999. She also became licensed to teach elementary education in Colorado. Dr. Eisler moved across the Rockies to study Molecular Biology at Utah State University, where she earned an MS in 2002. Her studies in Genomics, Speciation, and hybrid sterility continued at the University of Notre Dame in Indiana, where she earned her Ph.D. in 2009. While at Notre Dame, Dr. Eisler was recognized for teaching with both a Certificate of Teaching Excellence and an Outstanding Graduate Student Teacher Award. Her research was supported by an NSF: Doctoral Dissertation Improvement Grant. Before coming to the University of the Cumberlands, Dr. Eisler taught Biotechnology at St. Mary’s College.

Dr. Eisler continues to be fascinated by differences in genes between species. She is currently working with students to annotate portions of the fourth chromosome of several species of Drosophila. The fourth chromosome is of particular interest, as it harbors large portions of heterochromatin and few expressed genes. Since the heterochromatin does not undergo meiotic recombination, these are regions that are frequently quite different between species. Interestingly, this chromosome is the most like our human chromosomes.

Courses taught

BIOL 110 – General Biology Laboratory
BIOL 131 – General Biology
BIOL 113 – Population Biology Laboratory
BIOL 345 – Microbiology
BIOL 495 – Senior Seminar
Presentations and Publications

Eisler, HL., Romero-Severson, J., and Hollocher H. When Genomes collide: Examination of
expression profile differences underlying female hybrid sterility in Drosophila. In

Eisler, HL., Gloss, A.**, Lobo, NF., Hollocher H. Hmrand Lhrexpression in D. simulans/D.
melanogasterhybrid females and their relation to variable oogenic development. In preparation.

** Notre Dame undergraduate

Eisler, HL.,Richardville, K.^, Hollocher, H. What makes a mate attractive? Mate choice and
genomic examination of courtship gene expression in female D. simulans/D. melanogaster hybrids. In preparation for Behavioral Genetics.

^ High school teacher

Eisler, HL., Lobo, NF., Hollocher, H. Examination of expression differences in different splice
variants of out at first (oaf) in D. simulans/D. melanogaster hybrid females in relation to variable oogenicdevelopmenyt. In preparation.

Eisler, H., Romero-Severson, J., and Hollocher H. Not just a boys club anymore: The role of
Hmr and Lhr in the fertility rescue of D. simulans/D. melanogaster hybrid females.
Presented at the Annual Meeting of the Society for the Study of Evolution. June 2008:
Minneapolis. MN.

Gloss, A.*, Eisler, H., Lobo, N., and Hollocher, H. Effects of gene expression differences on hybrid fertility in Drosophila simulans/melanogaster crosses.University of Notre Dame’s College of Science-Joint Annual Meeting. May 2008: Notre Dame, IN.

Keating, E.*, Eisler, H., and Hollocher, H.Fertility in Drosophila simulans, D. mauritiana,
and D. sechellia hybrids.University of Notre Dame’s College of Science-Joint Annual Meeting. May 2008: Notre Dame, IN.

* presented by a Notre Dame undergraduate

Eisler, H., Romero-Severson, J., and Hollocher H. Mom vs Dad: Who is better for a female hybrid to express her genes like? Presented at the Annual Meeting of the Society for Molecular Biology and Evolution. June 2007: Halifax, NS, Canada.

Eisler, H., Romero-Severson, J., and Hollocher H. When Genomes Collide: Additivity, dominance, and female fertility of D. simulans/D. melanogaster hybrids. Presented at the Annual Meeting of the Society for the Study of Evolution. June 2006: Stony Brook, NY.

Eisler, H., Romero-Severson, J., and Hollocher H.A genome-wide examination of D. simulans/D. melanogaster female hybrid sterility.Presented at the Annual Meeting of the Society for the Study of Evolution. June 2005: Fairbank, AK.

Dr. Joan Hembree Associate Professor / Adjunct Professor
Office:Correll Science Complex B115
Phone:(606) 539-4264

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Dr. Joan Hembree joined the Cumberlands faculty in 2000 as a physiologist, biochemist, and cancer biologist. She earned the first of three advanced degrees in 1981, graduating from the University of Tennessee with a B.S. in Animal Science. She stayed on at the University of Tennessee to complete an M.S. in Reproductive Physiology in 1983, and then moved on to the University of Minnesota, where she was awarded a Ph.D. in Biochemical Nutrition in 1990. Since then, she has completed additional study in biochemistry at Case Western University, which awarded her a Metabolism Training Grant for post-doctoral research.

Dr. Hembree is a member of the Kentucky Academy of Sciences, the Human Anatomy and Physiology Society, and the Endocrine Society. Her principal areas of research are in cancer cell biology, alopecia areata (autoimmune hair loss), and muscle cell physiology.

Courses Taught

BIOL 110 General Biology Laboratory
BIOL 130 General Biology
BIOL 243 Human Anatomy
BIOL 244 Human Physiology
BIOL 344 Cell Physiology
BIOL 434 Biochemistry
BIOL 443 General Animal Physiology
BIOL 495 Senior Seminar
Publications, Presentations, and Research

Hembree, J.R., A. Lambert, C. Agarwal, T. Efimove, R.L. Eckert. 1999. Insulin-like growth factor binding protein-3 does not mediate the interferon-dependent suppression of human ectocervical epithelial cell proliferation. International Journal of Oncology. 14: 1164-1168.

Invited Lecture: Guest lecturer at John Carroll University, October 11, 1999. Lecture title, Insulin-like growth factors and cervical cancer.

Hembree, J.R., C. Agarwal, R.L. Beard, R.A.S. Chandraratna, R.L. Eckert. 1996. Retinoid X receptor-specific retinoids inhibit the ability of retinoid and receptor-specific retinoids to increase the level of insulin-like growth factor binding protein-3 in human ectocervical epithelial cell. Cancer Research. 56: 1794-1799.

Oral Presentation, Dermatological Association Meeting, 1996. J.R. Hembree, C. Agarwal, R.L. Beard, R.A.S. Chandraratna, R.L. Eckert. RXR-specific retinoids inhibit the ability of RAR-specific retinoids to increase the level of insulin-like growth factor binding protein-3 (IGFBP-3) in human ectocervical epithelial cells.

Hembree, J.R., M.S. Pampusch, F. Yang, J.L. Causey, M.R. Hathaway, W. R. Dayton. 1996. Cultured porcine myogenic cells produce insulin-like growth factor binding protein-3 (IGFBP-3) and transforming growth factor beta-1 stimulaes IGFBP-3 production. Journal of Animal Science. 74: 1530-1540.

Eckert, R.L., C. Agarwal, J.R. Hembree, C.K. Choo, N. Sizemore, S. Andreatta-Van Leyen, E.A. Rorke. 1995. Human cervical cancer. Retinoids, interferon and human papillomavirus. Advances in Experimental Medicine and Biology. 375: 31-44.

Oral Presentation, Dermatological Association Meeting, 1995. J.R. Hembree, C. Agarwal, R.A.S. Chandraratna and R.L. Eckert. Differential regulation of human cervical cell insulin-like growth factor binding protein-3 level and proliferation by RXR- and RAR-specific retinoids. Journal of Investigative Dermatology. 104: 594.

Hembree, J.R., C. Agarwal and R.L. Eckert. 1994. Epidermal growth factor (EGF) suppresses insulin-like growth factor binding protein-3 levels in human papillomavirus type 16-immortalized cervical epithelial cells: Potentiation of IGF effects via the EGF growth regulatory pathway. Cancer Research. 54: 3160-3166.

Agarwal, C., J.R. Hembree, R.L. Eckert. 1994. EGF and TGF beta-q regulation of growth and protease production by human papillomavirus-immortalized cervical cells-implications for tumor growth. Cancer Research. 54: 943-949.

Agarwal, C., J.R. Hembree, R.L. Eckert. 1994. Interferon and retinoic acid suppress the growth of human papillomavirus type 16 immortalized cervical epithelial cells, but only interferon suppresses the level of the human papillomavirus transforming oncogenes. Cancer Research. 54: 2108-2112.

Andreatta-Van Leyan, S., J.R. Hembree, R.L. Eckert. 1994. Regulation of IGF-1 binding protein-3 levels by epidermal growth factor and retinoic acid in cervical epithelial cells. Journal of Cellular Physiology. 160: 265-274.

Hathaway, M.R., M.S. Pampusch, J.R. Hembree, W.R. Dayton. 1994. Transforming growth factor beta-1 facilitates establishing clonal populations of ovine muscle satellite cells. Journal of Animal Science. 72: 2001-2007.

Eckert, R.L., C. Agarwal, J.R. Hembree, C.K. Choo, N. Sizemore, S. Andreatta-Van Leyen, and E.A. Rorke. 1994. Retinoids, interferon, human papillomavirus, and cancer. In Skin Cancer: Mechanisms and Human Relevance. Muhktar, H. (Ed.) CRC Press, pp. 361-370.

Hembree, J.R., M.R. Hathaway and W.R. Dayton. 1991. Growth and differentiation of embryonic porcine myogenic cells in culture. Journal of Animal Science. 69, 3241-3250.

Hathaway, M.R., J.R. Hembree, M.S. Pampusch and W.R. Dayton. 1991. Effect of transforming growth factor (TGF) beta on proliferation of ovine satellite cell proliferation and fusion. Journal of Cellular Physiology. 146: 435-441.

Pampusch, M.S., J.R. Hembree, M.R. Hathaway and W.R. Dayton. 1991. Effect of transforming growth factor (TGF) beta on proliferation of L6 and embryonic porcine myogenic cells. Journal of Cellular Physiology. 146: 435-441.

Clarke, S.D., and J.R. Hembree. 1990. Inhibition of triiodothyronine’s induction of rat liver lipogenic enzymes by dietary fat. Journal of Nutrition. 120: 6254-6300.

Dr. Andrew Hockert Department Chair / Associate Professor
Office:Correll Science Complex B117
Phone:(606) 539-4388

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Dr. Andrew Hockert graduated from McMurry University in Abilene, Texas in 2000 with a BS in Biology. He received his PhD in 2007 in Biochemistry and Molecular Genetics at the Texas Tech University Health Sciences Center graduate school of Biomedical sciences in Lubbock, Texas. While completing his doctorate he worked as an adjunct professor of Biology at Wayland Baptist University in Lubbock Texas in 2006 and 2007. Dr. Hockert joined the University of the Cumberlands faculty in the fall of 2007 as an assistant professor of Biology.
Dr. Hockert’s area of expertise involves three distinct areas: regulation of gene expression, cancer, and RNA processessing. Regulation of gene expression involves understanding primarily how genes are controlled through proteins called transcription factors and how the various transcription factors all work together in order to ensure the correct levels and times for gene expression. His cancer research has been mainly into how cancer cells break away from their normal genetic controls and how cancer develops.

The main focus of Dr. Hockert’s research is in the area of RNA processing. RNA processing is a series of three essential events that must occur in the nucleus of eukaryotic cells for a pre-mRNA to become fully mature and to be released into the cytoplasm. The three events are 5’ capping, splicing, and polyadenylation. Dr. Hockert focuses on the polyadenylation event in RNA processing, which is the addition of 250-300 adenine nucleotides to the 3’ end of the messenger RNA. The protein that his research focuses on is called CstF-64 and is involved with clipping off a portion of the pre-mRNA (called the cleavage step) before the poly-A tail is added.
Courses Taught:
BIOL 134. Introduction to Cellular Biology
BIOL 114. Introduction to Cellular Biology laboratory
BIOL 340. Genetics
BIOL 445. Molecular Biology
BIOL 495. Senior Seminar
Publications, Presentations, and Research

Hockert, J. A., Hsiang-Jui Y., and MacDonald, C. C. “The Hinge Domain of the Cleavage Stimulation Factor Protein CstF-64 Is Essential for CstF-77 Interaction, Nuclear Localization, and Polyadenylation.” Journal of Biological Chemistry. January 1, 2010

Paper of the Week, Journal of Biological Chemistry (2010)

Summer Immersion Grant for integration of Biotechnology into Genetics and Molecular Biology courses ($5000), University of the Cumberlands (2009)

Dr. Bret Kuss Professor
Office:Correll Science Complex B107
Phone:(606) 539-4381

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Dr. Bret Kuss, a vertebrate biologist, was invited to join the Cumberland College faculty in 1989. He attended Southwest Baptist University, earning a B.S. in Biology and Chemistry in 1980. In 1986, he earned a Ph.D. in Zoology from the University of Arkansas.
Dr. Kuss is a member of the Kentucky Academy of Science, the Society for the Study of Amphibians and Reptiles, and the Herpetologist’s League. His research focuses on the distribution, habitat selection, behavior, and ecology of salamanders.

Courses Taught

BIOL 343 Human Anatomy
BIOL 348 Vertebrate Embryology
BIOL 442 Comparative Anatomy
BIOL 447 Histology
BIOL 460 Ecological Field Methods
Publications, Presentations, and Research

2014. Efforts Toward an eDNA Method for Detecting Mud Salamanders and Red Salamanders in Local Streams. Samuel Huntley and Dr. Bret Kuss. Presentation at meetings of the Kentucky Chapter of The Wildlife Society.
1998. Evaluation of a method of sampling for relative densities of larval salamanders in stream communities. Poster. Highlands Conference on Plethodontid Salamanders.
1998. Testing the assumption that satiated salamanders are less likely to risk nocturnal movements. Poster. Joint meetings of SSAR & HL.

Dr. Lisa Lyford Associate Professor
Office:Correll Science Complex B113
Phone:(606) 539-4281

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Dr. Lisa K. Lyford is a summa cum laude graduate of the University of Massachusetts at Amherst, earning a B.S. in Biochemistry with minors in Chemistry and Music Performance. After advanced study and research in Microbiology and Immunology, she branched out to pharmacology. Her doctoral research focused on the electrophysiological properties of nicotinic acetylcholine receptors in the brain. She earned her doctorate in Pharmacology from the University of North Carolina at Chapel Hill in 1999, and continued at UNC as a postdoctoral associate. She was also a postdoctoral teaching associate at North Carolina State University in the Biotechnology Education Facility, where she taught combined graduate / undergraduate courses in Mutagenesis and in Biotechnology. Dr. Lyford joined the biology faculty at the University of the Cumberlands in August, 2005.

Dr. Lyford is a member of the American Association for the Advancement of Science, the American Society for Microbiology, the National Association for Biology Teachers, the Association for Biology Laboratory Education, and the National Association of Advisors for the Health Professions.

Courses Taught:

BIOL 114 Introduction to Cellular Biology Laboratory
BIOL 134 Introduction to Cellular Biology
BIOL 130 General Biology
BIOL 345 Microbiology
BIOL 441 Immunology
BIOL 346 Biochemistry
BIOL 495 Senior Seminar


William T. Miles Community Service Award, 2017
Student Government Association Honored Professor, 2015-2016


Lyford, L.K., Sproul, A.D., Eddins, D., McLaughlin, J.T., and Rosenberg, R.L. (2003) Agonist induced conformational changes in the extracellular domain of alpha7 nicotinic ACh receptors. Molec. Pharmacol. 64:650-658.

Lyford, L.K. and Rosenberg, R.L. “Reconstitution in planar lipid bilayers of ion channels synthesized in ovo and in vitro.” In: Planar Lipid Bilayers (BLMs) and Their Applications. Tien, H.T. and Ottova, A., editors. Elsevier, 2003. (Invited book chapter)

Eddins, D., Sproul, A.D., Lyford, L.K., McLaughlin, J.T., and Rosenberg, R.L. (2002) Glutamate 172, essential for modulation of L247T alpha7 ACh receptors by Ca2+, lines the extracellular vestibule. Am. J. Physiol. (Cell Physiol.) 283:C1454-1460.

Lyford, L.K., Lee, J.W., and Rosenberg, R.L. (2002) Low affinity Ca2+ and Ba2+ binding sites in the pore of alpha7 nicotinic acetylcholine receptors. Biochim. Biophys. Acta 1559:69-78.

Eddins, D., Lyford, L.K., Lee, J.W., Desai, S.A., and Rosenberg, R.L. (2002) Permeant but not impermeant divalent cations enhance the activation of non-desensitizing alpha7 nicotinic receptors. Am. J. Physiol. (Cell Physiol.) 282:C796-804.

Lyford, L.K. and Rosenberg, R.L. (1999) Cell-free expression and functional reconstitution of homo-oligomeric alpha7 nicotinic acetylcholine receptors into planar lipid bilayers. J. Biol. Chem. 274:25675-25681.

Washington , O.R., Deslauriers, M., Stevens, D.P., Lyford, L.K., Haque, S., Yan, Y., and Flood, P.M. (1993) Generation and purification of recombinant fimbrillin from Porphyromonas (Bacteroides) gingivalis 381. Infection & Immunity, 61:1040-1047.
Kent-Braun, J.A., Lyford, L.K., Gross, D.J., and Westhead, E.W. (1991) Effects of substance P on secretion of catecholamines from populations of bovine chromaffin cells and on calcium transients in individual cells. Ann. N.Y. Acad. Sci. 632:241-248.

Lyford, L.K., Kent-Braun, J.A., and Westhead, E.W. (1990) Substance P enhances desensitization of the nicotinic response in bovine adrenal chromaffin cells but enhances secretion upon removal. J. Neurochem. 55:1960-1965.
Poster Presentations:

Lyford, L. K. and Key, S. C. S. “A laboratory course module for teaching mutagenesis and gene knockout technology in microorganisms.” American Society for Microbiology Conference for Undergraduate Educators, June 3-5, 2005, Atlanta, GA.

Lyford, L. K. and Key, S. C. S. “Mutagenesis: A laboratory course module for site-directed mutagenesis and gene knockout technology.” Association for Biology Laboratory Education Annual Meeting, June 21-25, 2005, Blacksburg, VA.

Lyford, L. K., Eddins, D., Lee, J. W., and Rosenberg, R. L. “Extracellular calcium modulates the responses of pore mutant 7 nicotinic acetylcholine receptors to antagonists.” Soc. Neurosci. Abstr., (1999) 25:240. Society for Neuroscience Annual Meeting, October 23-28, 1999, Miami Beach, FL.

Lyford, L. K., Lee, J. W., Desai, S., Labarca, C., and Rosenberg, R. L. “ ‘Revertant’ pharmacology of a non-desensitizing alpha7 nicotinic acetylcholine receptor mutant expressed in Xenopus oocytes.” Biophys. J. (1997) 72:A149. Biophysical Society Annual Meeting, March 2-6, 1997, New Orleans, LA; and the North Carolina Society for Neuroscience, May 20, 1997, Duke University, NC.

Lyford, L. K. and Rosenberg, R. L. “Cell-free expression and reconstitution of a neuronal nicotinic acetylcholine receptor.” Biophys. J. (1996) 70:A200. Biophysical Society Annual Meeting, February 17-21, 1996, Baltimore, MD

Lassiter, C.L.* and Lyford, L.K. “Development of a Laboratory Course in Molecular Site-Directed Mutagenesis.” 14th Annual Undergraduate Research Symposium, April 28, 2005, North Carolina State University. *Undergraduate student mentee
Additional Published Abstracts:

Lyford, L. K., Sproul, A. D., Eddins, D., McLaughlin, J. T., and Rosenberg, R. L. Agonist-induced conformational changes in the vestibule of alpha7 nicotinic ACh receptors. Biophys J. 84 (2): 229A-229A Part 2 Suppl. (2003). Biophysical Society Annual Meeting , March 1-5, 2003, San Antonio, TX.

Eddins, D., Lyford, L. K., Tanguay, S. E., and Rosenberg, R. L. Permeant divalent cations augment pharmacological responses of nondesensitizing alpha7 nicotinic acetylcholine receptors, but impermeant cations do not. Soc. Neurosci. Abst. (2000) 26:72. Society for Neuroscience Annual Meeting, Nov. 4-9, 2000, New Orleans, LA.

Dr. Renee Yetter Associate Professor
Office:Correll Science Complex B118
Phone:(606) 539-4523

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Dr. Renee Yetter, a native of New Hampshire, received her B.A. in Biology at Lake Erie College for Women in Painesville, Ohio in 1979. She went on to Miami University, Oxford, Ohio, where she received her Master of Environmental Science (Applied Ecology Emphasis) through the University’s Institute of Environmental Science in 1983, and Ph.D. in Botany through the Botany Department in 1989. She held teaching assistantships throughout her graduate studies.

Dr./Mrs. Yetter came to University of the Cumberlands with her husband, Dr./Mr. Yetter in 1990. Since then, she has taught courses that include General Biology, Organismal Biology/Biodiversity, Introduction to Population Biology, Ecology, Plant Biology (lecture and lab), Plant Taxonomy, Teaching Science P-5, Teaching Science – Practicum, Methods and Materials for Teaching of Science, Bioethics, Natural History of the Central Appalachians, Subtropical Ecology of Andros Island, Bahamas, Senior Seminar, and regularly participates in the University’s Insights Program.

She is a member of Sigma Chi Biological Honorary Society and Beta Beta Beta Biological Honorary Society.

Her research interests include plant reproductive ecology, plant-pollinator interactions, plant ecology, and honeybees, but she finds many other research topics fascinating.
She is a lifelong horse-lover/owner, knitter, hand spinner, and enjoys hiking, camping, birding, and, of course, botanizing.

Dr. Todd Yetter Professor of Biology
Office:Correll Science Complex, B117
Phone:(606) 539-4399

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Dr. Todd Yetter is a professor and former Chair of the Biology Department. He teaches BIOL 349 (Plant Biology), BIOL 341 (Plant Taxonomy), BIOL 330 (Dendrology), BIOL 110 (General Biology Lab), BIOL 130 (General Biology Lecture) and occasionally BIOL 330 (Medicinal Plants). Research interests include honey bees, plant pollination, and biodiesel production. He is very happily married to Dr. Renee Yetter; together they have two children. Dr. Yetter enjoys woodworking, gardening, and raising honey bees in his spare time.

Courses Taught:
BIOL 110 General Biology Laboratory
BIOL 130 General Biology
BIOL 241 Introduction to Environmental Science
BIOL 330 Special Topics in Biology: Medicinal Plants
BIOL 341 Plant Taxonomy
BIOL 349 Plant Biology
BIOL 495 Senior Seminar
Subtropical Ecology in Florida and the Bahamas

Publications, Presentations, and Research:
1999 - The creation of two interactive web sites for use in plant biology and environmental science.
1997 - Continuation of floristics and phytogeography of a wetland in Laurel County, Kentucky.
1996 - Preliminary floristics and phytogeography of a wetland in Laurel County, Kentucky.