2:00 PM 97. GATA4 ENHANCES SRY GENE TRANSCRIPTION THROUGH A DIRECT INTERACTION WITH WILMS TUMOR 1 (WT1). Miyamoto, Yoko¹, Silversides, David³, Viger, Robert^{1, 2}, ¹ CHUL Research Centre, Ste-Foy, QC, Canada³ Université de Montréal, St-Hyacinthe, QC, Canada² Université Laval, Québec, QC, Canada

2:15 PM 98. PHOSPHOTIDYLINOSITOL 3-KINASE (PI3 Kinase) IS A POTENTIAL SIGNAL TRANSDUCTION PATHWAY FOR VASCULAR ENDOTHELIAL GROWTH FACTOR (VEGF) REGULATION OF EMBRYONIC TESTIS MORPHOGENESIS. Bott, Rebecca¹, McFee, Ryann ¹, Baltes, Michelle¹, Clopton, Debra¹, Cupp, Andrea¹, ¹ University of Nebraska-Lincoln, Lincoln, NE

2:30 PM 99. SEQUENCES 5' TO THE MOUSE IRX3 GENE CONFER A FEMALE SPECIFIC PATTERN OF EXPRESSION IN DEVELOPING GONADS. Holthusen, Kirsten¹, Gao, Liying¹, Jorgensen, Joan¹, ¹ University of Illinois, Urbana, IL

2:45 PM 100. THE ROLE OF BETA-CATENIN ON THE DEVELOPMENT OF THE MULLERIAN DUCT IN MOUSE EMBRYOS. Deutscher, Erica¹, Aardema, Jorie ¹, Yao, Humphrey¹, ¹ University of Illinois at Urbana-Champaign, Urbana, IL

3:00 PM 101. TEMPORAL AND SPATIAL EXPRESSION PATTERNS OF ANDROGEN AND HEDGEHOG SIGNALLING COMPONENTS IN MOUSE WOLFFIAN DUCT DIFFERNTIATION. Joseph, Avenel¹, Aardema , Jorie¹, Hess, Rex¹, Yao, Humphrey¹, ¹ University of Illinois at Urbana-Champaign, Urbana, IL

3:15 PM 102. EXPRESSION OF THE LADYBIRD-LIKE HOMEOBOX 2 (LBX2) FACTOR DURING MOUSE TESTICULAR AND EPIDIDYMAL DEVELOPMENT. Moisan, Vanessa¹, Bomgardner, Daniela³, Tremblay, Jacques ^{1, 2}, ¹ CHUL Research Centre, Ste-Foy, QC, Canada³ University of Virginia, Charlottesville, VA² Université Laval, Ste-Foy, QC, Canada

3:30 PM 103. INVOLVEMENT OF DECREASED LGR8 EXPRESSION IN INGUINOSCROTAL MALDESCENT OF THE TESTES IN LH RECEPTOR KNOCKOUT ANIMALS. Yuan, Fangping¹, Rao, Ch¹, Lei, Zhenmin¹, ¹ University of Louisville Health Sciences Center, Louisville, KY 40292

3:45 PM 104. DEVELOPMENT OF ANDROGEN BIOSYNTHETIC CAPACITY IN AN ENRICHED FRACTION OF STEM LEYDIG CELLS. Ge, Renshan ¹, Dong, Qiang¹, Sottas, Chantal¹, Hardy, Matthew^{1, 2}, ¹ The Population Council, New York, NY² Rockefeller University, New York, NY