A research group found that in female fruit flies, microorganisms enhance reproductive function, boosting the number of cells that form eggs and the number of mature eggs. This is done by controlling ...

Giant sperm may be the ultimate packers. Inside male fruit flies, thousands of sperm ­— each about as long as the fruit fly itself ­— cram into sacs roughly the size of a very fine pen tip. And ...

The cellular biology of reproduction is often depicted as an epic journey, in which millions of intrepid sperm fight to be the first to claim the ultimate prize: the chance to fertilize the egg, which ...

Osaka, Japan – For many of us, when we think of microbiomes, our first thoughts are probably about the beneficial microorganisms that live in our guts. But now, researchers from Japan and US have ...