Ya know, I try to be civil but the pressure to fling poo is strong.

UK scientists plan a major research project to see if synthetic human blood can be made from embryonic stem cells.

Led by the Scottish National Blood Transfusion Service, the three year trial could provide an unlimited supply of blood for emergency transfusions.

BBC

Meanwhile, in the Great American Desert (it tends to be windy all year round), willful ignorance services ideology, as it has for millenia:

"...I oppose all forms of experimentation on human embryos, and do not believe that taxpayers should be fored to fund this type of activity. There is widespread evidence that such controversial and ethically divisive research, which requires the destruction of a human embryo, and therefore a human person, is ineffective. It also appears to be financially unsustainable absent generous federal subsidies. Unfortunately, many reports do not adequately distinguish among the different types of stem cell research, potentially contributing to significant public confusion on this important issue." - Fortenberry form letter, 3/16/2009

Yes, a report about "stem cells" might cause confusion - as opposed to reports by the Representative who goes out of his way to deliberately cause confusion. He conveniently lists shortcomings of scientific opposition versus the sublime success of The Good Life, buttressed by the occasional anti-science anecdote.

We could provide an unlimited supply of blood in this way

That's O-negative blood the Professor's talking about, the kind that can be transfused into anyone without fear of tissue rejection.
And where do these life-giving embryos originate? Petri dishes. They're from in-vitro fertilization procedures - the embryos that are not implanted. Unless used in research projects these embryos are destined for... the trash can.

Somewhere in this paragraph I would probably ask the Representative why he's not charging the fertility clinic operators with murder, but just this morning I saw a video clip of Representative Bat-shit crazy Bachmann questioning the Treasury Secretary of the United States of America. Given that context, my would-be rhetorical question becomes a disturbing prediction of future legislation coming from the Republican party. I'll just stop now.