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Associate Professor

Ph.D. - University of Delaware

Phone: 301-405-3933
Email: ckeefer@umd.edu

Representative Publications:

Selected Publications

Keefer, C.L., Pant. D., Blomberg, L., Talbot, N.C. (2007). Challenges and prospects for the establishment of embryonic stem cell lines of domesticated ungulates.  Animal Reproduction Sciences 98(1-2):147-68.

He, S., Pant, D., Schiffmacher, A., Bischoff, S., Melican, D., Gavin, W., Keefer, C.L. (2006). Developmental expression of pluripotency determining factors in caprine embryos:  Novel pattern of NANOG protein localization in the nucleolus.  Molecular Reproduction and Development. 73(12):1512-22

Lazaris, A., Keyston, R., Karatzas, C.N., Keefer, C.L. (2006) Transgenesis using nuclear transfer in goats. Methods Mol. Biol. 348:213-26.

Betts, D.H., Perault, S.D., Petrik, J., Lin, L., Favetta, L.A., Keefer, C.L., King, W.A. (2005). Telomere length analysis in goat clones and their offspring. Molecular Reproduction and Development 72(4):461-470. 

Keefer, C.L. 2004. Production of bioproducts through the use of transgenic animal models. Animal Reproduction Science 82-82:5-12.

Baldassarre, H., Keefer, C.L., Wang, B., Lazaris, A., Karatzas, C.N. (2003). Nuclear transfer in goats using in vitro matured oocytes recovered by laparoscopic ovum pick-up. Cloning & Stem Cells 5(4): 279-285.

Bordignon, V, Keyston, R, Lazaris, A, Bilodeau, AS, Pontes, JHF, Arnold, D, Fecteau, G, Keefer, C, Smith, LC. (2003). Transgene expression of green fluorescent protein and germ line transmission in cloned calves derived from in vitro transfected somatic cells. Biol. Reprod. 68: 2013-2023.

Keefer, C.L., Keyston, A., Lazaris, A., Bhatia, B., Begin, I., Bilodeau, A.S., Zhou, F.J., Kafidi,N., Wang, B., Baldassarre, H., Karatzas, C.N. (2002). Production of cloned goats following nuclear transfer using adult somatic cells. Biol. Reprod. 66: 199-203.

Gauthier, M., Pierson, J., Drolet, M., Bhatia, B., Baldassarre, H., and Keefer, C.L. (2001). Sexual Maturation and Fertility of Male Nigerian Dwarf Goat (Capra hircus) Clones Produced by Somatic Cell Nuclear Transfer. Cloning: 3(3):151-155.

Keefer, C.L., Baldassarre, H., Keyston, R., Wang, B., Bhatia, B., Bilodeau, A.S., Zhou, J.F., Leduc, M., Downey, B.R., Lazaris, A., and Karatzas, C.N. (2001). Generation of dwarf goat (capra hircus) clones following nuclear transfer with transfected and non-transfected fetal fibroblasts and in vitro matured oocytes. Biol. Reprod. 64(3):849-856.

Smith, L.C., Bordignon, V., Babkine, M., Fecteau, G., and Keefer, C.L. (2000). Benefits and problems with cloning animals. Can. Vet. J. 41(12): 919-924.