Early pregnancy

Recent advances in human cryobiology have been substantially greater than the first slow step from freezing spermatozoa in animals in Italy, published in 1776 to observing motility in frozen-thawed human sperm in 1938(1). Reports on cryopre…

The abortifacient and menstrual effects of the potent antiprogestin, RU 486 (mifepriston) are associated with both endometrial hemorrhage and extracellular matrix (ECM) degradation. Such processes reflect reduced perivascular decidual cell …