Human organs on demand potentially inside animal bodies. the obvious question is, what could go around? a lot. dr. marc siegel as a fox medical contributor and he joins us tonight for a doctor, give us a quick overview of what he's trying to do and why >> scientist juan a scientist is w in california, flies over to china, and he knows that he is going to be able to evade regulations, and that is a big part of it.ak he takes a monkey embryo and imbues it with human stem cells, saying that he's going to be able to create organs that could be used in the future for transplants. it's a press relea...