Some interesting questions are being brought up around this issue at the moment. Is it right to mix human and animal cells together? what do you think? join the dabate. 

http://blogs.reuters.com/uknews/2008/05/19/is-hybrid-embryo-research-monstrous/

Jeff Goldblum – in The Fly (half human,half fly)

here is the data you took on bones for comparison – you must sort through what is useful and what is not