This undated image provided by the Mitalipov Laboratory at Oregon Health & Science University shows a a microscope image of a human egg that contains a nucleus taken from a skin cell. (Mitalipov ...

Female mammals have long thought to be born with all the eggs they would ever have, but new research is challenging that consensus ...

Dr. James Lim, associate professor of pediatrics at UBC’s faculty of medicine, observes pediatric cancer cells grown in a chicken egg under a microscope. Disclaimer: AAAS and EurekAlert! are not ...

WASHINGTON — Oregon scientists used human skin cells to create fertilizable eggs, a step in the quest to develop lab-grown eggs or sperm to one day help people conceive. But the experiment resulted in ...