Mrs. R. can't understand how her infertility specialist could implant four live embryos inside her without one surviving.

But there were live embryos.

Mr. Bush has said he opposes federal financing of "experimentation on embryonic stem cells that require live human embryos to be discarded or destroyed."

What Mr. Bush said: "Taxpayer funds should not underwrite research that involves the destruction of live human embryos."

The fusion genes were injected into embryos and expression examined by fluorescent microscopy in live embryos.

Each sand collar contains thousands of capsules, each one housing one or several live embryos.

During the campaign, he had said, "Taxpayer funds should not underwrite research that involves the destruction of live human embryos."

She'd never seen a live two-celled embryo before, much less her own.

"Are you calling for a halt to the use of live embryos as a source for stem cells?"

I have in mind the invasive research of live human embryos and the harvesting for research purposes of oocytes from women.