I've never considered miscarriages as a source for stem cells.
Would they be the same as embryonic stem cells?
"I've never considered miscarriages as a source for stem cells."
Yep. But they have already been acquired and the lines have been replicated and so anyone who wishes to use them can obtain them.
There is no shortage of embryonic stem cells.
They have limited utility which is Mark's point. Adult stem cells and umbilical cells show more promise.