In-vitro fertilization (IVF) and gamete intrafallopian transfer (GIFT).

In the past decade, the use of in-vitro fertilization and embryo transfer (IVF-ET) procedures as a means of treatment of infertility has become a clinical reality. More recently, similar yet differing techniques have been described that further expand options of treatment of infertile couples. This article summarizes recent advances in IVF and compares it with the most widely recognized of these alternatives, gamete intrafallopian transfer (GIFT). In addition to comparing and contrasting these new technologies, the authors attempt to highlight unresolved questions about their use.