If it's what I think - it's real bodies "plastified", tissues are mixed with some kind of plastic.
This German "scientist" is sick.
We had a huge scandal in Novosibirsk IIRC, with some patalogo-anatomists selling "unindentiied bodies" to this guy, and even some bodies without notifying relatives....
Imagine your dead body filled with plastifier and exhibited by this sick person, so everybody will gaze at what have been once your organs
