Sperm cells have a monumental task, but their days are numbered. From the moment they're made in the testes to the time they may spend winding their way up the labyrinthine of the female reproductive ...

As we age, our cells accumulate DNA mutations. If any of these mutations confer a growth advantage to a self-renewing or long-lived progenitor cell, its lineage can expand. The progenitor cells that ...

It's a myth that sperm die upon contact with oxygen. In fact, their resilience might surprise you. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...