According to a Korean news report, a former personnel of the notorious Unit 731 testified at a medical ethics related symposium held in Osaka that he dissected two to three living human bodies daily. In one case, he testified that he dissected a mother in front of her child, letting the child watch her die while they cut her up into pieces.  The child was later sent to be used in a frostbite experiment. Apparently this went on for years.
What punishment did Unit 731 receive for their research? Amnesty.
I wish I could link to the testimony directly but Korean newspaper sites rarely provide links to the material they used to write their articles.