The two Japanese reproductive biologists, Katsuhiko Hayashi and Mitinori Saitou, are attempting to make egg cells without human ovaries.
In 2016, two Japanese reproductive biologists, Katsuhiko Hayashi and Mitinori Saitou, made an announcement in the journal Nature that read like a science-fiction novel. The researchers had taken skin cells from the tip of a mouse’s tail, reprogrammed them into stem cells, and then turned those stem cells into egg cells. The eggs, once fertilized, were trans...