2:00 PM 73. ISOLATION AND TRANSPLANTATION OF ADULT MAMMALIAN FEMALE GERMLINE STEM CELLS AND PROGENITORS. Johnson, Joshua¹, Bagley, Jessamyn¹, Skaznik-Wikiel, Malgorzata¹, Lee, Ho-Joon¹, Adams, Gregor¹, Canning Tilly, Jacqueline¹, Cortes, Maria¹, Forkert, Randolf¹, Spitzer, Thomas¹, Iacomini, John¹, Scadden, David¹, Tilly, Jonathan¹, ¹ Massachusetts General Hospital, Harvard Medical School, Boston, MA

2:15 PM 74. GERMLINE POTENTIAL OF STEM CELLS DERIVED FROM PORCINE SKIN. Li, Julang¹, Dyce, Paul¹, Wen, Lihua¹, ¹ Universuty of Guelph, Guelph, ON, Canada

2:30 PM 75. PAIRING FAILURE AND OOCYTE LOSS IN XY AND XO MOUSE OVARIES. Alton, Michelle¹, Taketo, Teruko¹, ¹ McGill University, Montreal, QC, Canada

2:45 PM 76. KL-2 IS THE PRINCIPAL KL ISOFORM REGULATING MURINE OOCYTE GROWTH AND MAINTENANCE OF MEIOTIC ARREST IN VITRO. Thomas, Fiona¹, Vanderhyden, Barbara¹, ¹ University of Ottawa, Ottawa Health Research Institute, Ottawa, ON, Canada

3:00 PM 77. CDC42 ACTIVATION AS THE TRIGGER FOR ANAPHASE I INITIATION IN OOCYTE MATURATION. Liu, X. Johne^{1, 2}, Ma, Chunqi¹, Wang, Ling^{1, 2}, Xi, Yanwei^{1, 2}, Zheng, Pei-Pei^{1, 2}, Montplaisir, Veronique¹, Benink, Helene³, Bement, William³, ¹ Ottawa Health Research Institute, Ottawa Hospital, Ottawa, ON, Canada² University of Ottawa, Ottawa, ON, Canada³ University of Wisconsin-Madison, Madison, WI

3:15 PM 78. THE OOCYTE FIRST ACQUIRES THE ABILITY TO CONTROL ITS SIZE AT OVULATION BY INITIATING VOLUME-REGULATORY GLYCINE TRANSPORT. Tartia, Alina¹, Baltz, Jay¹, ¹ Ottawa Health Research Institute, University of Ottawa, Ottawa, ON, Canada

3:30 PM 79. OOCYTE-SECRETED FACTORS PREVENT BOVINE CUMULUS APOPTOSIS: PARACRINE REGULATION BY BONE MORPHOGENETIC PROTEINS. Hussein, Tamer¹, Froiland, David¹, Thompson, Jeremy¹, Gilchrist, Robert¹, ¹ University of Adelaide, Research Centre for Reproductive Health, Adelaide, SA, Australia

3:45 PM 80. INVOLVEMENT OF Smad PATHWAYS ON SEXUALLY DIMORPHIC DIFFERENTIATION OF PRIMORDIAL GERM CELLS. Tomaszewski, Jessica¹, Aardema, Jorie ¹, Yao, Humphrey¹, ¹ University of Illinois at Urbana-Champaign, Urbana, IL