M358. LOW CONCENTRATION OF WATER-SOLUBLE VITAMINS STIMULATES IVM RATE AND SUBSEQUENT PARTHENOGENETIC DEVELOPMENT OF PORCINE OOCYTES. Jin, Dong Il¹, Park, Chang Sik¹, Naruse, Kenji¹, Kim, Hong Rye¹, Shin, Young Min¹, Chang, Suk Min¹, Lee, Hye Ran¹, ¹ Chungnam National University, Daejeon, Korea

T359. INTERACTIONS OF INDOL ACETIC ACID WITH EGF AND FSH IN THE CULTURE OF OVINE PREANTRAL FOLLICLES. Seneda, Marcelo¹, Andrade, Evelyn^{1, 2}, Alfieri, Amauri¹, Oliveira, Joao ³, Bracarense, Ana Paula¹, Figueiredo, Jose ², Toniolli, Ricardo², ¹ University of Londrina, Londrina, PR, Brazil² State University of Ceara, Fortaleza, CE, Brazil³ UNESP, FCAVJ, Jaboticabal, SP, Brazil

W360. SPERM DEFECTS IN MICE LACKING FUNCTION OF NIEMANN-PICK C1 PROTEIN. Akabane, Hiroto¹, Graham, Stephanie¹, Richardson, Laura ², Zhu, Guo-Zhang¹, ¹ Marshall University, Huntington, WV² Marshall University School of Medicine, Huntington, WV

M361. THE POSTACROSOMAL ASSEMBLY OF SPERM HEAD PROTEIN, PAWP, IS INDEPENDENT OF ACROSOME FORMATION AND DEPENDENT ON MICROTUBULAR MANCHETTE TRANSPORT. Wu, Alexander¹, Sutovsky, Peter², van der Spoel, Aarnoud ³, Oko, Richard¹, ¹ Queen's University, Kingston, ON, Canada² University of Missouri-Columbia, Columbia, MO³ University of Oxford, Oxford, United Kingdom

T362. INDUCTION OF MEIOTIC MATURATION IN MOUSE OOCYTES BY ADENOSINE ANALOGS. Chen, Jing¹, Downs, Stephen¹, ¹ Department of Biological Sciences, Milwaukee, WI

W363. EXPRESSION PATTERN OF MALE GERM CELL-SPECIFIC GENES AFTER NEONATAL MOUSE TESTES GRAFTED INTO CASTRATED IMMUNODEFICIENT MICE. Zhang, Fang-Ting¹, Yu, Jie¹, Cai, Zhi-Ming¹, Long, Xia¹, Ye, Jing¹, Wan, Hui-Juan¹, Fang, Jia-Zhi¹, ¹ Peking University Shen-Zhen Hospital, Shen Zhen, PR China

M364. MUTANT MOUSE MODELS OF INFERTILITY: A RESOURCE FOR NEW REPRODUCTIVE GENE DISCOVERIES. Pendola, Janice¹, Sweeney, Sheila ¹, Lothrop, Heather¹, Lessard, Carl¹, Schimenti, John², Handel, Mary Ann¹, Eppig, John¹, ¹ The Jackson Laboratory, Bar Harbor, ME² Cornell University, Ithaca, NY

T365. FKBP6 DEFICIENCY IN RATS DISORDERS HOMOLOGOUS CHROMOSOME PAIRING, BUT NOT SEX CHROMOSOME INACTIVATION. Noguchi, Junko¹, Tsuji, Taketo², Kurniani Karja, NW¹, Fahrudin, Mokhamad¹, Ozawa, Manabu¹, Ohnuma, Katsuhiko¹, Kikuchi, Kazuhiro¹, Kaneko, Hiroyuki¹, Kunieda, Tetsuo², ¹ National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan² Okayama University, Okayama, Okayama, Japan

W366. CHROMATIN REMODELING DURING MEIOSIS IN SPERMATOCYTES. Sun, Fengyun ¹, Handel, Mary Ann¹, ¹ The Jackson Laboratory, Bar Harbor, ME

M367. PRODUCTION OF A TELOMERASE-IMMORTALIZAED BOVINE SERTOLI CELL LINE. Sartini, Becky¹, Vogt, Volker¹, Huang, Stephanie¹, Parks, John¹, ¹ Cornell University, Ithaca, NY

T368. PROTEIN PHOSPHATASE-1 AND HISTONE-H3 PHOSPHORYLATION DURING MOUSE OOCYTE MEIOSIS I CHROMATIN CONDENSATION. Swain, Jason ¹, Villa-Moruzzi, Emma², Smith, Gary¹, ¹ University of Michigan, Ann Arbor, MI² University of Pisa, Pisa, Italy

W369. CHARACTERIZATION OF THE SUBFERTILITY DEFECT OF MALE LUNATIC FRINGE MICE. Hahn, Katherine ¹, Howard, Sheena¹, Beres, Brian¹, Chang, Yung¹, Wilson-Rawls, Jeanne¹, ¹ Arizona State University, Tempe, AZ

M370. TERMINATION OF CELL-TO-CELL COMMUNICATION WITHIN THE OVARIAN FOLLICLE: INDUCTION OF OOCYTE MATURATION. Sela-Abramovich, Sagit ¹, Edry, Iris¹, Galiani , Dalia ¹, Nevo, Nava¹, Dekel, Nava¹, ¹ Weizmann Insitute of Science, Rehovot, Israel

T371. EXPRESSION OF THE NOTCH REGULATORS, NUMB, NUMBLIKE, AND NEURALIZED IN MOUSE OVARY. Beres, Brian ¹, Barton, Michael¹, McGlade, Jane ², Wilson-Rawls, Jeanne¹, ¹ Arizona State University, Tempe, AZ² University of Toronto, Hospital for Sick Children, Toronto, ON, Canada

W372. FUNCTION OF LRH-1 IN MALE GERM CELLS. Sierens, Jayne¹, Jayakody, Irumini¹, Meacham, Sarah¹, Clyne, Colin¹, ¹ Prince Henry's Institute for Medical Research, Clayton, VIC, Australia

M373. GLYCERALDEHYDE 3-PHOSPHATE DEHYDROGENASE-S FORMS A UNIQUE COMPLEX THAT IS INTEGRATED INTO THE FIBROUS SHEATH OF THE SPERM FLAGELLUM. Miki, Kiyoshi¹, Mapara, Sabeen¹, Miki, Yuko¹, Krisfalusi, Michelle¹, O'Brien, Deborah¹, ¹ University of North Carolina School of Medicine, Chapel Hill, NC

T374. SEXUAL DEVELOPMENT OF HOLSTEIN BULLS. Huang, Stephanie¹, Sartini, Becky¹, Parks, John¹, ¹ Cornell University, Ithaca, NY

W375. REGULATORY GENES IN EARLY FOLLICULOGENESIS. Nandedkar, Tarala¹, Dharma, Shalmali ¹, Mukherjee, Srabani¹, ¹ National Institute for Research in Reproductive Health, Mumbai, Maharashtra, India

M376. EPIGENETIC REGULATION OF FETAL GERM CELL DIFFERENTIATION. Resnick, James¹, Maatouk, Danielle¹, Kellam, Lori¹, Mann, Mellissa², Bartolomei, Marisa², Li, En³, ¹ University of Florida, Gainesville, FL² University of Pennsylvania, Philadelphia, PA³ Novartis Institutes for Biomedical Research, Cambridge, MA

T377. STRAIN DIFFERENCES IN THE TIMING AND RATE OF CYST BREAKDOWN AND THE ASSOCIATED APOPTOSIS IN DEVELOPING OOCYTES OF NEONATAL MICE. Medico, Leonard¹, Wilson, Krystal¹, Pepling, Melissa¹, ¹ Syracuse University, Syracuse, NY

W378. THE CHEMICALLY INDUCED MUTATION gcd2 (GERM CELL DEPLETION 2) REDUCES PRIMORDIAL GERM CELL POPULATIONS AND CAUSES INFERTILITY IN MICE. Reinholdt, Laura ¹, Kamdar, Sonya¹, Munroe, Robert², Schimenti, John ², ¹ The Jackson Laboratory, Bar Harbor, ME² Cornell University, Ithaca, NY

M379. DEVELOPMENTAL CHANGES IN THE MECHANISM REGULATING INTRACELLULAR pH DURING GROWTH OF THE MOUSE OOCYTE PRIOR TO OVULATION. Erdogan, Seref¹, Tartia, Alina², Baltz, Jay², ¹ Cukurova University Faculty of Medicine, Adana, Turkey² Ottawa University Ottawa Health Research Institute, Ottawa, ON, Canada

T380. CHARACTERIZATION OF THE BOVINE SPERMATIC TRANSCRIPTOME. Gilbert, Isabelle^{1, 2, 3}, Boissonneault, Guylain², Bissonnette, Nathalie³, Robert, Claude¹, ¹ CRBR/Université Laval, Quebec, QC, Canada² Université de Sherbrooke, Sherbrooke, QC, Canada³ Agriculture Canada, Lennoxville, QC, Canada

W381. USE OF FOURIER HARMONIC ANALYSIS OF NUCLEAR MORPHOLOGY OF BULL SPERM TO PREDICT FERTILITY. Kaya, Abdullah^{1, 2}, Xu , Ruifeng ¹, Northey, Dave ¹, Susko-Parrish, Joan¹, Parrish, John¹, ¹ University of Wisconsin, Madison, WI² University of Selcuk, Konya, Turkey

M382. DEVELOPMENTAL POTENTIAL OF BOVINE OOCYTES CULTURED IN DEFINED MATURATION MEDIA. Sagirkaya, Hakan^{1, 2}, Misirlioglu, Muge¹, Kaya, Abdullah³, Odaman-Mercan, Hande¹, First, Neal³, Parrish, John³, Memili, Erdogan¹, ¹ Mississippi State University, Mississippi State, MS² Uludag University, Bursa, Turkey³ University of Wisconsin-Madison, Madison, WI

T383. IMPROVED INDUCTION OF MALE GERM-CELL LINEAGE FROM MOUSE EMBRYONIC STEM CELLS BY SERTOLI CELL-CONDITIONED MEDIA. Oh, Hwa Soon¹, Eum, Jin Hee¹, Chung, Hyung Min¹, Lee, Woo Sik¹, Yoon, Tae Ki¹, Cha, Kwang Yul¹, Kim, Kye-Seong², Lee, Dong Ryul¹, ¹ CHA Research Institute, Pochon CHA University, Seoul, Korea² Hanyang University College of Medicine, Seoul, Korea

W384. TUMOR NECROSIS FACTOR ALPHA, PROGESTERONE, AND KERATINOCYTE GROWTH FACTOR (KGF) ACT TO REGULATE OVARIAN FOLLICLE ASSEMBLY AND PRIMORDIAL FOLLICLE TRANSITION. Nilsson, Eric¹, Kezele, Phillip, Stanfield, Jacob¹, Skinner, Michael¹, ¹ Washington State University, Pullman, WA

M385. CHANGES IN GERMINAL VESICLE CHROMATIN CONFIGURATIONS DURING GROWTH AND MATURATION OF BOVINE OOCYTES. Tan, Jing-He¹, Liu, Yong¹, Sui, Hong-Shu¹, Luo, Ming-Jiu¹, Chang, Zhong-Le¹, ¹ Shandong Agricultural University, Taian, Shandong Province, P R China

T386. EXPRESSION AND FUNCTIONAL CHARACTERIZATION OF PDE3A IN PORCINE OOCYTE. Sasseville, Maxime ¹, Darou, Gabrielle¹, Richard, Francois¹, ¹ CRBR, Universite Laval, Ste-Foy, QC, Canada

W387. THE TIMING OF MEIOTIC ONSET INFLUENCES OOCYTE LOSS IN THE MOUSE OVARY. Fazio, Cynthia¹, Taketo, Teruko, ¹ McGill University, Montreal, QC, Canada

M388. RELATIONSHIP BETWEEN IN VITRO MATURATION AND PLASMINOGEN ACTIVATOR ACTIVITY OF PORCINE OOCYTES EXPOSED TO OXIDATIVE STRESS. Park, Choon-Keun¹, Sa, Soo-Jin¹, Cheong, Hee-Tae¹, Yang, Boo-Keun¹, Kim, Choung-Ik¹, ¹ Kangwon National University, Chunchon, Kangwon-Do, Korea

T389. NUCLEAR MITOTIC APPARATUS (NuMA) PROTEIN: EXPRESSION AND POTENTIAL FUNCTION IN MAMMALIAN OOCYTES DURING MEIOTIC MATURATION. Koch, Jessica¹, Viveiros, Maria¹, ¹ University of Pennsylvania, Kennett Square, PA

W390. EFFECTS OF CULTURE MEDIA AND ENERGY SOURCES ON NUCLEAR MATURATION IN BOVINE CUMULUS-ENCLOSED OOCYTES. Bilodeau-Goeseels, Sylvie¹, ¹ Agriculture and Agri-Food Canada, Lethbridge, AB, Canada

M391. CHARACTERIZATION OF INTERACTION BETWEEN THE AUTOPHAGY PROTEIN BECLIN AND GAMETOGENETIN: IMPLICATIONS FOR MALE GERM CELL SURVIVAL. Welbern, Vanessa¹, Alinea, Corinne¹, Rucker, Edmund¹, ¹ University of Missouri-Columbia, Columbia, MO

T392. PHENOTYPIC AND GENETIC CHARACTERIZATION OF Swrm1, AN ENU-INDUCED MOUSE MALE INFERTILITY MUTATION. Harris, Tanya¹, Marquez, Becky¹, Hartford, Suzanne¹, Wilson, Larry², Suarez, Susan¹, Handel, Mary Ann², Eppig, John², Schimenti, John¹, ¹ Cornell University, Ithaca, NY² Jackson Laboratory, Bar Harbor, ME

W393. ACCUMULATION OF CYCLIN-DEPENDENT KINASE-1 AT THE ACQUISITION OF MEIOTIC COMPETENCE BY OOCYTES IS POST-TRANSCRIPTIONALLY REGULATED BY A MECHANISM DEPENDENT ON THE GRANULOSA CELLS. Clarke, Hugh¹, Cui, Shanjin¹, Allard, Patrick¹, Gauthier, France¹, ¹ McGill University, Montreal, QC, Canada

M394. INSULIN SIGNALING THROUGH GLYCOGEN SYNTHASE KINASE-3 REGULATES CHROMATIN CONDENSATION AND SEGREGATION IN MOUSE OOCYTES. Smith, Gary¹, Ding, Jun¹, ¹ University of Michigan, Ann Arbor, MI

T395. OOCYTE-DIRECTED DEPLETION OF CONNEXIN43 USING THE Cre-LoxP SYSTEM. Gershon, Eran¹, Plaks, Vicki¹, Aharon, Idan¹, Galiani, Dalia¹, Petrovich, Katia¹, Kalma, Yael¹, Reizel, Yitzhak¹, Sela-Abramovitch, Sagit¹, Granot, Irit², Winterhager, Elke³, Dekel, Nava¹, ¹ The Weizmann Institute of Science, Rehovot, Israel² Kaplan Medical Center, Rehovot, Israel³ University Hospital Duisburg-Essen, Duisburg, Essen, Germany

W396. EFFECTS OF ABOLISHING LH PULSATILITY BY SUPRA-PHYSIOLOGICAL CONCENTRATIONS OF ESTRADIOL-17 ON OVARIAN ANTRAL FOLLICULAR GROWTH IN ANESTROUS EWES. Barrett, David¹, Ewen, Kirk¹, Duggavathi, Rajesha², Cook, Susan¹, Davies, Kate¹, Pattullo, Kim¹, Bagu, Edward¹, Rawlings, Norman¹, ¹ University of Saskatchewan, Western College of Veterinary Medicine, Saskatoon, SK, Canada² Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch CEDEX, France

M397. THE EFFECTS OF SCROTAL INSULATION ON BOVINE SPERM NUCLEAR SHAPE AS DETERMINED BY FOURIER HARMONIC ANALYSIS AND ITS RELATION TO IN VITRO FERTILIZATION. Enwall, Lefric¹, Kaya, Abdulah^{1, 2}, Geiger, Lindsey¹, Schindler, Josh¹, Orchard, Jennifer¹, Northey, David¹, Parrish, John¹, ¹ University of Wisconsin, Madsion, WI² Selçuk University, Konya, Turkey

T398. CHANGES OF THE 3-HYDROXY-3-METHYLGLUTARYL COENZYME REDUCTASE EXPRESSION IN THE TESTIS DURING DEVELOPMENT AND ADULTHOOD THROUGHOUT THE ANNUAL REPRODUCTIVE CYCLE IN A SEASONAL BREEDER, THE MINK (Mustela vison). Chen, Li¹, Vitale, María¹, Pelletier, R-Marc¹, ¹ Université de Montréal, Montréal, QC, Canada

W399. METHYLATION ANALYSIS OF THE IMPRINTED Rasgrf1 GENE IN TISSUES EXHIBITING MONOALLELIC, BIALLELIC, OR NO EXPRESSION. Gerfen, Jennifer¹, Rahn-Lee, Charlotte¹, Davis, Tamara ¹, ¹ Bryn Mawr College, Bryn Mawr, PA

M400. INVOLVEMENT OF AN ₆₁-INTEGRIN/FOCAL ADHESION COMPLEX IN SPERMIATION AND SPERMIATION FAILURE. Beardsley, Amanda^{1, 2}, Robertson, David ¹, O'Donnell, Liza¹, ¹ Prince Henry's Institute of Medical Research, Melbourne, VIC, Australia² Monash University, Melbourne, VIC, Australia

T401. BOULE AND DAZL EXPRESSION PATTERNS IN PRIMATES DEMONSTRATE A NEOFUNCTIONALIZATION OF A TESTIS-SPECIFIC GENE FAMILY. Luetjens, C. Marc¹, Tung, Joyce², Wistuba, Joachim¹, Xu, Eugene ², Reijo Pera, Renee², Gromoll, Jörg¹, ¹ Westphalian Wilhelms-University, Muenster, Germany² University of California at San Francisco, San Francisco, CA

W402. SERINE/THREONINE PHOSPHORYLATION BY PKA ASSOCIATED WITH AKAP4 DURING CAPACITATION. Kaneto, Masako^{1, 2}, O'Brien, Deborah¹, Miki, Kiyoshi¹, ¹ University of North Carolina School of Medicine, Chapel Hill, NC² Developmental Research Laboratories, Shiongi & Co., Ltd., Osaka, Japan

M403. NEONATAL OOCYTE DEVELOPMENT IN AN OVARY ORGAN CULTURE SYSTEM. Chen, Ying¹, Pepling, Melissa¹, ¹ Syracuse University, Syracuse, NY

T404. DE NOVO SYNTHESIS AND HYPERPHOSPHORYLATION OF pEg3 DURING MEIOTIC MATURATION OF Xenopus laevis OOCYTES. Xi, Yanwei^{1, 2}, Tassan, Jean-Pierre ³, Liu, Johné ^{1, 2}, ¹ Ottawa Health Research Institute, Ottawa Hospital, Ottawa, ON, Canada² University of Ottawa, Ottawa, ON, Canada³ UMR6061-CNRS, Université de Rennes, Rennes, France

W405. A BOVINE ORTHOLOGUE OF THE MATERNAL EFFECT GENE STELLA/PGC7 IDENTIFIED BY SUBTRACTIVE AND SUPPRESSIVE HYBRIDIZATION. Pennetier, Sophie¹, Uzbekova, Svetlana¹, Mermillod, Pascal¹, Dalbiès-Tran, Rozenn¹, ¹ Université François Rabelais de Tours/Haras Nationaux, Nouzilly, FRANCE

M406. GENE EXPRESSION IN PRIMORDIAL GERM CELL DEVELOPMENT. Kellam, Lori¹, Resnick, James¹, ¹ University of Florida, Gainesville, FL

T407. RAB2 IS A MAJOR SUBACROSOMAL PROTEIN OF SPERMATOZOA IMPLICATED IN ACROSOMAL BIOGENESIS. Oko, Richard¹, Mountjoy, Jeremi ¹, Wu, Alexander ¹, ¹ Queen's University, Kingston, ON, Canada

W408. SECRETION OF GDF9 BY MOUSE OOCYTES IS DEVELOPMENTALLY REGULATED. Diaz, Francisco¹, Pangas, Stephanie², Matzuk, Martin², Eppig, John¹, ¹ The Jackson Laboratory, Bar Harbor, ME² Baylor College of Medicine, Houston, TX

M409. THE DUAL ROLE OF PDE3A IN OOCYTE MATURATION. Edry, Iris¹, Galiani, Dalia¹, Dekel, Nava¹, ¹ Weizmann Institute of Science, Rehovot, Israel

T410. STRUCTURAL STUDIES OF THE PERINUCLEAR THECA PROVIDE EVIDENCE FOR SPECIFIC PROTEIN SUB-DOMAINS IN MOUSE AND SYRIAN GOLDEN HAMSTER SPERM HEADS. Klaus, Angela¹, Ward, W. Steven², Storey, Bayard³, ¹ American Museum of Natural History, New York, NY² Institute for Biogenesis Research, Honolulu, HI³ Center for Research on Reproduction and Women's Health, Philadelphia, PA

W411. DEVELOPMENT OF MULTIDRUG RESISTANCE TYPE I P-GLYCOPROTEIN FUNCTION DURING IN VITRO MATURATION OF PORCINE OOCYTE. Arai, Manabu¹, Yamauchi, Nobuhiko¹, Fukuda, Hiroaki¹, Soh, Tomoki¹, Hattori, Masa-aki¹, ¹ Kyushu University, Fukuoka, Japan

M412. SYNERGISTIC FUNCTION OF MAPK PATHWAY AND p34^cdc2 KINASE AT MEIOTIC ARREST OF RAT MATURED OOCYTES. Ito, Junya¹, Shimada, Masayuki², Hochi, Shinichi³, Hirabayashi, Masumi^{1, 4}, ¹ National Institute for Physiological Sciences, Okazaki, Japan² Hiroshima University, Higashi-Hiroshima, Japan³ Shinshu University, Ueda, Japan⁴ The Graduate University of Advanced Studies, Okazaki, Japan

T413. EFFECTS OF PLASMINOGEN ACTIVATOR/PLASMIN PROTEOLYTIC SYSTEM ON SPERM-OOCYTE INTERACTION DURING IN VITRO FERTILIZATION IN THE PIG. Sa, Soo-Jin¹, Cheong, Hee-Tae¹, Yang, Boo-Keun¹, Park, Choon-Keun¹, ¹ Kangwon National University, Chunchon, Kangwon-Do, Korea

W414. IDENTIFICATION AND CHARACTERIZATION OF RAFTS IN MEMBRANES OF MOUSE SPERM. Rodriguez, Delany¹, Lott, William¹, Trevino, Claudia¹, ¹ New Mexico State University, Las Cruces, NM

M415. PRODUCTION OF BOVINE SPERMATIDS FROM TRANSPLANTED PREPUBERTAL TESTIS TISSUE AND DEVELOPMENTAL COMPETENCE OF RECOVERED SPERMATIDS. Kaproth, Michael^{1, 2}, Lee, Dong^{2, 3}, Parks, John², ¹ Genex Cooperative, Inc., Shawano, WI² Cornell University, Ithaca, NY³ Pochon CHA University, College of Medicine, Seoul, Korea

T416. AN INVESTIGATION INTO THE RESPONSIVENESS OF SMALL ANTRAL FOLLICLES (≥1 mm BUT ≤3 mm IN DIAMETER) TO FSH STIMULATION DURING THE ESTROUS CYCLE IN THE EWE. Davies, Kate¹, Duggavathi, Rajesha¹, Barrett, David¹, Bagu, Edward¹, Rawlings, Norman¹, ¹ University of Saskatchewan, Western College of Veterinary Medicine, Saskatoon, SK, Canada

W417. A "NUTRIENT SPARING" HYPOTHESIS TO EXPLAIN THE NUTRITION OF THE IMMATURE BOVINE CUMULUS-OOCYTE COMPLEX. Thompson, Jeremy¹, Clark, Alys², Froiland, David¹, Stokes, Yvonne², Lane, Michelle¹, ¹ The Queen Elizabeth Hospital, University of Adelaide, Woodville, SA, Australia² The University of Adelaide School of Mathematical Sciences, Adelaide, SA, Australia

M418. TARGETED DISRUPTION OF GASZ IN MICE LEADS TO MALE STERILITY DUE TO A MEIOSIS ARREST. Ma, Lang¹, Yan, Wei², Lin, Yi-Nan ¹, Matzuk, Martin¹, ¹ Baylor College of Medicine, Houston, TX² University of Nevada School of Medicine, Reno, NV

T419. TOWARDS THE PHENOTYPIC CHARACTERIZATION AND POSITIONAL CLONING OF A NOVEL FERTILITY MUTANT, 403-16. Philipps, Dana¹, Harford, Suzanne¹, Schimenti, Kerry¹, Eppig, John², Handel, Mary Ann², Schimenti, John¹, ¹ Cornell University, Ithaca, NY² The Jackson Laboratory, Bar Harbor, ME

W420. INITIATION OF OOCYTE GROWTH IN GROWTH AND DIFFERENTIATION FACTOR-9 (GDF9) DEFICIENT MICE PRECEDES BOTH INITIATION OF FOLLICLE DEVELOPMENT AND THE INCREASE IN KIT LIGAND (KL) mRNA EXPRESSION. Ethier, Jean-Francois^{1, 2}, Thomas, Fiona^{1, 2}, Vanderhyden, Barbara^{1, 2}, ¹ Ottawa Regional Cancer Centre, Ottawa Health Research Institute, Ottawa, ON, Canada² University of Ottawa, Ottawa, ON, Canada

M421. IDENTIFICATION OF GENES WITH SPERM-SPECIFIC UNMETHYLATED REGIONS. Sato, Shun ¹, Suzuki, Masako¹, Abe, Tetsuya¹, Hattori, Naka¹, Tanaka, Satoshi¹, Shiota, Kunio¹, ¹ The University of Tokyo, Tokyo, Japan

T422. ONTOGENY OF THE CHROMATIN REMODELING PROTEIN ATRX AND ITS POTENTIAL INTERACTION WITH DEATH DOMAIN-ASSOCIATED PROTEIN (DAXX) DURING MOUSE SPERMATOGENESIS. Baumann, Claudia¹, De La Fuente, Rabindranath¹, ¹ University of Pennsylvania, Kennett Square, PA

W423. CHARACTERIZATION OF INTRACELLULAR CALCIUM RESPONSE TO IONOMYCIN IN THE EQUINE OOCYTE AT DIFFERENT STAGES OF NUCLEAR MATURATION. Checura, Celina¹, Parrish, John¹, ¹ University of Wisconsin-Madison, Endocrinology Reproductive Physiology Program, Madison, WI

M424. IS CONNEXIN43 REQUIRED FOR TESTICULAR STEROIDOGENIC FUNCTIONS? Kahiri, Caroline ¹, Tekpetey, Francis ¹, Khalil , Wahid¹, Kidder, Gerald¹, ¹ University of Western Ontario, London, ON, Canada

T425. PATERNAL ALLELE-SPECIFIC METHYLATION IS ACQUIRED AT THE PROMOTER OF THE IMPRINTED MOUSE Gtl2 LOCUS POST-FERTILIZATION. He, Lu Mei¹, Powell, Elizabeth¹, Stein, Geneva¹, Davis, Tamara¹, ¹ Bryn Mawr College, Bryn Mawr, PA

W426. THE DEVELOPMENT OF IMMATURE MALE GERM CELLS AFTER TESTICULAR TISSUE HOMOGRAFTING AND XENOGRAFTING. Yu, Jie¹, Cai, Zhi-Ming¹, Ye, Jing¹, Zhang, Fang-Ting¹, Wan, Hui-Juan¹, Fang, Jia-Zhi¹, Gui, Yao-Ting¹, Wang, Jie-Dong², Zong, Shu-Dong², ¹ Peking University Shen-Zhen Hospital, Shen Zhen, PR China² National Research Institute for Family Planning, Beijing, PR China

M427. DEFAULT PROTEIN SORTING AND DEGRADATION PATHWAYS IN MAMMALIAN TESTIS AND EPIDIDYMIS REVEALED IN THE UBC-GFP TRANSGENIC MOUSE. Sutovsky, Miriam¹, Manandhar, Gaurishankar¹, Feng, Dawn¹, Sutovsky, Peter ¹, ¹ University of Missouri-Columbia, Columbia, MO, 65211

T428. IN VITRO SPERMATOGONIAL DIFFERENTIATION IN JSD MOUSE TESTES IS STIMULATED BY ELEVATED TEMPERATURE. Porter, Karen¹, Meistrich, Marvin¹, ¹ UT M.D. Anderson Cancer Center, Houston, TX

W429. THE IN VITRO EFFECT OF EGF, FSH AND TESTOSTERONE ON SPERMATOGONIAL CELLS COLONIZATION. Anjamrooz, SH¹, Movahedin, M¹, Tiraihi, T¹, Mowla, SJ¹, ¹ Tarbiat Modares University, Tehran, Iran

M430. EXPRESSION OF HSP105 AND HSP60 GENES DURING GERM CELL APOPTOSIS IN THE HEAT-TREATED TESTES OF ADULT CYNOMOLGUS MONKEYS (Macaca fascicularis). Zhang, Xue-sen¹, Yuan, Jin-xiang ¹, Chen, Min¹, Lue, Yan-he ², Liu, Yi-xun¹, ¹ State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China² Harbor-University of California-Los Angeles Medical Center, Torrance, CA

T431. HEAT STRESS INDUCES AMPK ACTIVATION AND MEIOTIC MATURATION IN MOUSE OOCYTES. LaRosa, Cean¹, Downs, Stephen¹, ¹ Marquette University, Milwaukee, WI

W432. CHOLESTEROL DEPLETION ALTERS LIPID RAFTS STRUCTURE AND THE MEMBRANE LOCALIZATION OF THE SPERMATOZOA-ASSOCIATED PROTEIN P25b. Girouard, Julie¹, Frenette, Gilles ¹, Sullivan, Robert ¹, ¹ Université Laval, Québec, QC, Canada

M433. EXPRESSION AND LOCALIZATION OF BROMODOMAIN PROTEIN 4 (BRD4) DURING OOCYTE MATURATION AND FERTILIZATION IN MICE. Nagashima, Takashi¹, Maruyama, Tetsuo¹, Uchida, Hiroshi¹, Masuda, Hirotaka¹, Masanori, Ono¹, Arase, Toru¹, Asada, Hironori¹, Ozato, Keiko², Yoshimura, Yasunori¹, ¹ Keio University School of Medicine, Tokyo, Japan² NICHD, NIH, Bethesda, MD

T434. Nohlh, A NOVEL HELIX LOOP HELIX TRANSCRIPTION FACTOR, IS CRITICAL IN MAMMALIAN GAMETOGENESIS. Rajkovic, Aleksandar ¹, Pangas, Stephanie¹, Matzuk, Martin¹, Ballow, Daniel¹, ¹ Baylor College of Medicine, Houston, TX

W435. OVARIAN ANTRAL FOLLICULAR DYNAMICS IN CYCLIC EWES REVISITED: COMPARISON BETWEEN 3-WAVE AND 4-WAVE ESTROUS CYCLES. Seekallu, Srinivas¹, Toosi, Behzad¹, Duggavathi, Rajesha^{1, 2}, Barrett, David¹, Davies, Kate¹, Bagu, Edward¹, Rawlings, Norman¹, ¹ University of Saskatchewan, Western College of Veterinary Medicine, Saskatoon, SK, Canada² Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, Alsace, France

M436. THE RELATIONSHIPS BETWEEN THE FSH PEAK AMPLITUDE AND THE OVARIAN ANTRAL FOLLICULAR DYNAMICS IN CYCLIC EWES. Toosi, Behzad¹, Seekallu, Srinivas¹, Duggavathi, Rajesha^{1, 2}, Barrett, David ¹, Davies, Kate¹, Bagu, Edward¹, Rawlings, Norman¹, ¹ University of Saskatchewan, Western College of Veterinary Medicine, Saskatoon, SK, Canada² Institut de Génétique et de Biologie Moleculaire et cellulaire, Illkirch, Alsace, France