Ancient Greek mythology referred to beings that were part human and part animal. Most people think of these creatures as imaginary. The line between fact and fantasy is becoming increasingly grey as modern scientists test the moral boundaries of genetic engineering and fuse together animal-human-hybrids. At the Shanghai Second Medical University in China embryos were formed using human cells fused with rabbit eggs. The embryos were destroyed soon after there conception and their stem cells …showed first 75 words of 327 total…

…showed last 75 words of 327 total…born this way. Many of them received heart valve transplants from pigs and cows. For year scientists have been adding human genes to farm animals in order for the animal to generate insulin for use in medications. With the stem cells it is possible to actually grow replacement body parts inside of living animals and than transplant those parts into humans. By adding human brain cells to mice the efficiency of their thinking is increased.