Primitive human eggs matured in the lab for the first time

P6480199-Human_Spermatozoa_Fertilizing_an_Egg

D. Phillips/SCIENCE PHOTO LIBRARY

Human eggs have been matured from their most primitive state to full development in the lab for the first time. The resulting eggs are ready to be fertilised, and, if healthy, could in theory be used to advance IVF treatments as well as helping women who had cancer when they were young.

“It is really exciting,” says Michael Dahan at McGill University Health Centre in Montreal, Canada, who was not involved in the work. “It has the potential to improve treatment.”

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Scientists have been …