Well, they're right on schedule in Britian, where they have "coaxed" female stem cells to develop into sperm cells. In England, apparently there is a law against using gametes derived from stem cells, and that article says that "the UK parliament is now debating changes to the 1990 Human Fertilisation and Embryology Act, and the government is under pressure to include an amendment that would allow the future use of eggs and sperm grown in the lab from stem cells. However, a clause added to this amendment would restrict this to sperm from genetic males and eggs from genetic females." The reason to do that is because converting it to the other gender's gamete requires genetic engineering to reverse the imprinting, and would not be restorative medicine that justifies attempting it.
In America, there is no such law, except in Missouri, where implanting such an embryo is illegal. It would be legal to try this today in Massachusetts and 48 other states.
It is now clear that the words "sperm" and "egg" are going to be used to refer cells that merely act and look like sperm and eggs, whether they come from a male or female won't matter. So, the "Hole In The Massachusetts Egg And Sperm Law" I wrote about last week is definitely there, and surely intentional. I will not bother to change the name of this blog, or of the Egg and Sperm Compromise, because I feel it still conveys the spirit of requiring a man and a woman's gametes. But now I will have to make clear that the "Egg and Sperm Law" is actually a "sperm of a man and egg of a woman law".