I. Development and Future of Human In Vitro Fertilization and Embryo Implantation.- 1. Implantation in the Human as Viewed by Canon Law, Civil Law, and Natural Reason.- 2. The Impact of Maternal Age and Ovarian Age on Implantation Efficiency.- II. Cellular Aspects of Implantation.- 3. Vascular Invasion During Implantation and Placentation.- 4. Oxygen Regulates Human Cytotrophoblast Proliferation, Differentiation, and Invasion: Implications for Endovascular Invasion in Normal Pregnancy and Preeclampsia.- 5. EmbryoMaternal Interactions after Diapause in a Marsupial.- 6. Cellular Interactions and the Cysteine Proteinases in the Process of Mouse Implantation.- III. Hormonal Regulation.- 7. Novel Steroid-Regulated Markers of Implantation.- 8. Molecular Signaling in Implantation.- 9. Identification of Progesterone-Regulated Genes in the Uterus.- IV. Molecular Markers of Receptivity.- 10. Mucins Provide a Barrier to Embryo Implantation.- 11. Potential Involvement of Trophinin, Bystin, and Tastin in Embryo Implantation.- 12. Osteopontin in Human Endometrium: A Role in Endometrial Receptivity and Embryo Implantation?.- V. Trophoblast Factors.- 13. The Rabbit as a Model for Implantation: In Vivo and In Vitro Studies.- 14. Regulation of Trophoblast Endocrine Function: The Placenta Does Its Own Thing Transcriptionally.- 15. Transcription Factors Regulating the Differentiation of the Trophoblast Cell Lineage.- VI. Primate Models and Human Studies.- 16. Hormonal Regulation of Endometrial Gene Expression in the Rhesus Monkey.- 17. EmbryoMaternal Dialogue in the Baboon (Papio Anubis).- 18. Integrins and Uterine Receptivity.- 19. Keratinocyte Growth Factor in the Nonhuman Primate Endometrium: Regulation and Action.- 20. Molecular Lesions in Infertility.- VII. Transcriptional Regulation of FetalMaternal Recognition.- 21. The Role of Abdominal B (AbdB) Hoxa Genes During Implantation.- 22. Possible Role of the Transcription Factor Oct-3/4 in Control of Human Chorionic Gonadotropin El#˜