WASHINGTON (AP) — Oregon scientists used human skin cells to create fertilizable eggs, a step in the quest to develop…WASHINGTON (AP) — 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. The OHSU team removed the nucleus from a human egg cell and replaced it with the nucleus from a human skin cell. But a skin cell contains two sets of chromosomes, and eggs and sperm are supposed to each contain only one set that combine during fertilization. The researchers therefore induced the egg-like cells to discard extra chromosomes, injected donated sperm and jumpstarted post-fertilization development. “It’s still not good enough to make embryos or eggs genetically normal.” He called the initial findings proof-of-concept and said his team is working on improvements.