SSS appears to be a superior protein source for mouse embryo growth and is as good as serum from fertile donors in promoting in vitro human embryo development.

No abstract

Transcervical ZIFT is an alternative to IVF-ET and laparoscopic GIFT. However, tubal catheterization cannot be accomplished in all cases. We describe a successful twin pregnancy that resulted from delayed uterine transfer of four embryos following unsuccessful TC-ZIFT transfer. Further data are needed to determine optimal management in cases of failed transcervical tubal transfer procedures.