WASHINGTON (Reuters) - Human egg cells can be tweaked to give rise to valued stem cells that match the tissue types of many different groups of people, U.S. and Russian researchers reported on Wednesday. They said the stem cells they have created from unfertilized human eggs look and act like embryonic stem cells.And they have been carefully tissue-matched in the same way as bone marrow donations to prevent the risk of rejection if they are transplanted into people.
