In-vivo blastocyst production and ovum yield among fertile women.

We evaluated ova recovered from 13 fertile women undergoing uterine lavage for purposes of embryo donation, and assessed differences in blastocyst production and ovum yield among subjects. Six women produced 10 blastocysts during 31 insemination cycles (32%). Yet, despite undergoing at least four insemination cycles apiece, seven women produced no… (More)