http://www.alphagalileo.org/Organisations/ViewItem.aspx?OrganisationId=243&ItemId=63737&CultureCode=en
“We were surprised by the results,” says Treier, “We expected the mice to stop producing oocytes, but what happened was much more dramatic: somatic cells which support the developing egg took on the characteristics of the cells which usually support developing sperm, and the gender-specific hormone-producing cells also switched from a female to a male cell type.”