yes, you are confused. Try this link and see if it helps you understand. The early lines developed like MA09..embryo was slated to be discarded anyway as many are. "Because the early clinical testing for the retinal cells was conducted on animals using a cell line from an embryo that was discarded, the company is continuing to use that line for its human testing," http://investorshub.advfn.com/boards/read_msg.aspx?message_id=63168225