Up until the 1950s, scientists were scratching their heads trying to figure out why their experiments using perfectly healthy ...

COLUMBIA, Mo. -- Scientists have struggled to fully understand how male sperm cells function and why they sometimes fail to fertilize female eggs, which has implications for both livestock farmers ...

A novel screening system developed at Kyoto University enables researchers to investigate sperm cell development and health at the molecular level. Science X Daily and the Weekly Email Newsletter are ...

Membrane hyperpolarization occurs in sperm during the fertilization of an oocyte in both mice and humans. Determining the molecular mechanisms behind the hyperpolarization of sperm is therefore ...

Mammalian sperm cannot fertilize an egg from the get-go. It's an ability acquired only after insemination, during passage through the female reproductive tract, and requires two consecutive, ...