“experiments that would grow unborn babies in the womb”
Whose womb?
I went back to the article and clicked “guidelines” in the second sentence of the article. This went to a page for the ISSCR with several options. I picked the one for 2021 approved guidelines and read the entire piece. There is nothing there about using 40 day old unborn babies. The discussion is about changing the 14 day limit for test tube blastocysts, and human-animal tissue combinations. Some time ago I saw an article and pictures of a human ear grown on the back of a mouse with the idea that it could be used to replace an accidentally lost human ear. I suspect the dramatic article title is aimed at increasing donations.