Whats being done to overcome the immune problem?
• To make animal organs more compatible with the humans, animals are being genetically modified to “knock out” genes that produce cell parts which the human immune system would reject. There has already been some success: the gal gene has been knocked out of pig DNA. • Pigs being cloned to produce new lines of pigs which are closer to human size (miniature swine) and have genetically more compatible organs.