With the body of a sheep and half-human organs, a University of Nevada professor has perfected the technique of injecting adult human cells into a sheep's fetus, producing an animal that is 15% human cells and 85 percent animal cells.
A harmless practice? Humans playing God? Laying the foundation for the introduction, as is suggested by some, for the introduction of viruses into the human population for which there is no cure?
Now scientists create a sheep that's 15% human
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