1. Principles behind therapeutic embryo freezing

   • René Frydman
   • Jacques Testart

   Editorial Pages: 275 - 276

2. The First Annual Conference for In Vitro Fertilization Nurse Coordinators

   • Filomena A. Nero
   • Alan H. DeCherney

   News and Views Pages: 277 - 278

3. Immunology of the sperm-egg interaction

   • Stacey Lee Mandelbaum
   • Michael P. Diamond
   • Alan H. DeCherney

   Reviews Pages: 279 - 283

4. A formula for scoring human embryo growth rates in in vitro fertilization: Its value in predicting pregnancy and in comparison with visual estimates of embryo quality

   • J. M. Cummins
   • T. M. Breen
   • J. F. Hennessey

   Special Contributions Pages: 284 - 295

5. Virus p30-related protein in follicular fluids and C virus-like particles on the cell membrane of the human oocyte

   • B. Ove Nilsson
   • Erik Larsson
   • Per Sundström

   Special Contributions Pages: 296 - 303

6. Growth of mouse embryos in bicarbonate media buffered by carbon dioxide, hepes, or phosphate

   • Maha M. Mahadevan
   • Judy Fleetham
   • Patrick J. Taylor

   Special Contributions Pages: 304 - 308

7. Transvaginal sonographically controlled ovarian puncture for oocyte retrieval for in vitro fertilization

   • Jean Cohen
   • Claude Debache
   • P. Cohen-Bacrie

   Special Contributions Pages: 309 - 313

8. Superovulation of mice with human menopausal gonadotropin or pure follicle-stimulating hormone in combination with human chorionic gonadotropin and the effects of oocyte aging on in vitro fertilization

   • W. R. Edirisinghe
   • H. Y. Law
   • S. S. Ratnam

   Special Contributions Pages: 314 - 318

9. Immunofluorescent localization of immunoglobulins on the cell surface of mouse oocytes and preimplantation embryos

   • Lynn M. Wiley
   • Michael Femi Obasaju

   Special Contributions Pages: 319 - 325

10. Comparison of two media in human in vitro fertilization program: Lack of significant differences in pregnancy rate

    • J. M. Cummins
    • T. M. Breen
    • G. Shaw

    Short Communications Pages: 326 - 330

11. Combined twin ectopic pregnancy and intrauterine gestation following in vitro fertilization and embryo transfer

    • Richard Porter
    • Bill Smith
    • Ian Craft

    Short Communications Pages: 330 - 332

12. Successful oocyte retrieval and in vitro fertilization following ultrasound-directed aspiration of endometriomas

    • K. R. Mao
    • C. J. Haines
    • P. P. L. Tam

    Short Communications Pages: 333 - 333

13. The in vitro fertilization program in a developing country-Venezuela

    • Juan Aller
    • Arpad Barany
    • Ilcedes de Faro

    Short Communications Pages: 333 - 335

14. The in vitro fertilization program at the Chinese University of Hong Kong

    • Kenneth R. Mao
    • Patrick P. L. Tam

    Letters to the Editors Pages: 336 - 337

15. Registry

    Announcement Pages: 338 - 338

16. Announcements

    Announcement Pages: 339 - 339