3:00 PM 49. LOCALIZATION, REGULATION, FUNCTION OF RUNX1 IN RAT PERIOVULATORY OVARIES. Jo, Misung¹, Curry, Thomas ¹, ¹ University of Kentucky, Lexington, KY

3:15 PM 50. PRODUCTION OF PROSTAGLANDINS BY PREOVULATORY FOLLICLES OF CATTLE: EFFECTS OF PROGESTERONE AND OXYTOCIN. Bridges, Phillip¹, Fortune, Joanne¹, ¹ Cornell University, Ithaca, NY

3:30 PM 51. GROWTH FACTOR REGULATION OF PLASMINOGEN ACTIVATORS AND PROTEASE NEXIN-1 IN BOVINE GRANULOSA CELLS. Cao, Mingju¹, Nicola, Edmir¹, Lussier, Jacques¹, Price, Christopher¹, ¹ University of Montreal, St-Hyacinthe, QC, Canada

3:45 PM 52. THE ROLE OF LH IN CHANGING GENE EXPRESSION DURING SELECTION OF A DOMINANT FOLLICLE IN CATTLE. Luo, Wenxiang¹, Gumen, Ahmet¹, Wiltbank, Milo ¹, ¹ University of Wisconsin-Madison, Madison, WI

4:00 PM 53. INCREASED mRNA EXPRESSION FOR FSH RECEPTOR IN SMALL ANTRAL FOLLICLES IN THE OVARIAN CORTEX OF TWIN-PRODUCING CATTLE. Echternkamp, Sherrill¹, Cushman, Robert¹, Christenson, Ronald ¹, ¹ USDA, ARS, RLH US Meat Animal Research Center, Clay Center, NE

4:15 PM 54. REGULATION OF OVINE INTERFERON-TAU GENE BY A BLASTOCYST SPECIFIC TRANSCRIPTION FACTOR, CDX-2. Ishida, Shohei¹, Matsuda-Minehata, Fuko^{1, 2}, Qin, Junwen¹, Iizuka, Masateru¹, Manabe, Noboru², Echternkamp, Sherrill³, Christenson, Ronald³, Imakawa, Kazuhiko¹, ¹ The University of Tokyo, Tokyo, Japan² The University of Tokyo, Ibaraki, Japan³ U.S.Meat Animal Research Center, USDA, Clay Center, NE

4:30 PM 55. NOBOX DEFICIENCY AND GENE EXPRESSION IN NEWBORN OVARIES. Choi, Youngsok ¹, Rajkovic, Aleksandar¹, ¹ Baylor College of Medicine, Houston, TX

4:45 PM 56. CUMULUS-OOCYTE COMPLEXES (COCS) EXPRESS THE EGF-LIKE FACTOR AMPHIREGULIN THAT IMPACTS NOT ONLY INDUCTION OF COX-2 IN THESE CELLS BUT ALSO OTHER GENES ASSOCIATED WITH COC FUNCTION. Shimada, Masayuki¹, Hernandez-Gonzalez, Immaculada¹, Gonzalez-Robayna, Ignacio¹, Richards, JoAnne ¹, ¹ Baylor College of Medicine, Houston, TX