Paging Dr. Moreau - Your Island is Ready

Sci Fi writers have been talking about it as far back as Frankenstein and the Island of Dr. Moreau, but we were all comforted by the fact that it was simply impossible. No longer it seems. Scientists - American scientists - are comingling human and animal material to produce chimeras. Maybe I am just getting to be an old fuddy-duddy, but I am horrified by the matter-of-fact attitudes of this story.

The University of Nevada-Reno researcher talks matter-of-factly about his plans to euthanize one of the pregnant sheep in a nearby lab. He can't wait to examine the effects of the human cells he had injected into the fetus' brain about two months ago.
"It's mice on a large scale," Chamberlain says with a shrug.
As strange as his work may sound, it falls firmly within the new ethics guidelines the influential National Academies issued this past week for stem cell research.

Why is this not a debate in the public? Why is it at the same time Congress debates the ethics of euthanizing rats and frogs, no one questions the ethics of doing the same to a human brain?