PregaTips on MSN

How long does it take for the embryo to enter the uterus?

The journey of early pregnancy begins with fertilisation and continues as the embryo travels to the uterus. Timing plays a ...
Nature

Kinetic Evidence for an Intermediate Stage in the Fertilization of the Sea Urchin Egg

ELECTRON microscopy has provided evidence for a series of anatomically distinct stages in the process of fertilization. In the polychaete worm Hydroides hexagonus, Colwin and Col win 1,2 have ...