1. Assisted hatching of human embryos

   • Jacques Cohen

   Review Pages: 179 - 190

2. Effects of sera from patients given various anesthetics on preimplantation mouse embryo development in vitro

   • Dennis W. Matt
   • Kenneth A. Steingold
   • Walter Dunwiddie

   Special Contributions Pages: 191 - 197

3. Syringe-associated toxicity of culture media on mouse and monkey preembryos

   • Deborah E. Johnson
   • Gary D. Hodgen

   Special Contributions Pages: 198 - 201

4. The reproductive outcome following a superhigh response to stimulation in gamete intrafallopian transfer program

   • Talha Al-Shawaf
   • Aonghus Nolan
   • Ian Craft

   Special Contributions Pages: 202 - 207

5. Developmental capacities of two-cell mouse embryos frozen by three methods

   • Ervin Macas
   • Min Xie
   • Thomas Rülicke

   Special Contributions Pages: 208 - 212

6. The use of transvaginal ultrasound to aspirate bilateral hydrosalpinges prior to in vitro fertilization: A case report

   • Jeffrey B. Russell
   • Zalo Rodriguez
   • Jeffry I. Komins

   Special Contributions Pages: 213 - 215

7. Improved fertilization rates of human oocytes in coculture

   • Ariff Bongso
   • Soon-Chye Ng
   • Shan Ratnam

   Special Contributions Pages: 216 - 221

8. A case of human pregnancy after microinjection of capacitated sperm into the perivitelline space

   • Christiane Wittemer
   • Laurence Moreau
   • Pierre Chambon

   Special Contributions Pages: 222 - 224

9. Reliability of gender determination using the polymerase chain reaction (PCR) for single cells

   • Charles M. Strom
   • Svetlana Rechitsky
   • Yury Verlinsky

   Special Contributions Pages: 225 - 229

10. The effect of leuprolide acetate on steroidogenesis by granulosa and theca cells in vitro

    • Jane L. Frederick
    • Michael J. Hickey
    • Richard J. Paulson

    Special Contributions Pages: 230 - 234

11. Pregnancy in a premature ovarian failure patient with donated oocytes from a 40-year-old sibling: A case report

    • Mahendra De Silva
    • Frances A. Conley
    • Chong S. Lee

    Short Communications Pages: 235 - 236

12. Twin in vitro fertilization (IVF) pregnancies: Spontaneous intrauterine abortion after selective second-trimester termination of ectopic intraabdominal pregnancy

    • G. Ragni
    • G. C. Lombroso Finzi
    • P. G. Crosignani

    Short Communications Pages: 236 - 237

13. Successful ovarian superovulation for in vitro fertilization in a patient with an undiagnosed intrauterine pregnancy

    • J. B. Lessing
    • A. Kogosowski
    • M. R. Peyser

    Short Communications Pages: 237 - 240

14. Pregnancies following direct oocyte-sperm transfer (DOST): A simple alternative to conventional in vitro fertilization (IVF)

    • K. Sterzik
    • B. Rosenbusch
    • C. Lauritzen

    Letter to the Editor Pages: 241 - 242

15. Announcement

    Announcement Pages: 243 - 243