Human Egg Precursor Generated in a Dish

Human pluripotent stem cells cradled by a mouse ovarian environment—a sort of living “dish”—differentiated into states that brought the cells close to becoming mature oocytes. The cells, which were evaluated over the course of a months-long experiment, progressed epigenetically toward reproductive competence, suggesting that induced pluripotent stem cells, given the right culture conditions, can become human egg cells.The encouraging findings emerged from a study conducte