Create a single chimeric human with the tissues of another and the very sense of self goes wobbly.
The twins have different proportions of male cells (XY) and female cells (XX), and are chimeric, meaning they have tissue with a diverse genetic make-up.
More perplexing to the team was the fact that the chimeric state is not permanent, with the immune system eventually returning to its original state.
This Wacky Sci-Fi Plane-Helicopter Hybrid Was Totally Almost a Thing By the end of WWII, the basics of helicopter technology as we know it had generally been worked out—and we'd begun to reach the aircraft's physical limitations. For the US Air Force, the solution to the issue running up against these performance walls was simple: Combine the best parts of a helicopter and jet together, creating the chimeric delta-wing Convertiplane. Read more...
Nov. 18, 2013 - Gizmodo
Jeremy Rifkin in World Forum There are other ways to advance medicine and human health besides going out into the strange, brave new world of chimeric animals,Rifkin said, adding that sophisticated computer models can substitute for experimentation on live animals....