we may send the brain to the alzhiemer's programme at iola >>> dudek says once medical research is complete, he's transparent about where and how the remains are used. >> although organ and tissue transplants are regulated, there's little oversight when it comes to body parts not in use by humans. how easy would it be for people to use body parts for a reason that is pon. >> it would be fairly easy. >> reporter: in fact, in a search warrant affidavit, the fbi alleges biological resource center of illinois, and an earlier company owned by the same family called anatomical service incorporated engaged in criminal behaviour. run by father and sun, the companies which merged in 2012 are accused of taking body parts from people who take clear commands that they don't want their bodies donated. making statements by their families as to how and why families are used, and selling body parts that have hepatitis, septemberize and -- septis and other matters. one doctor we spoke to said he would not have used the specimen had he known it was infected. >> reporter: under what circumstances would you se