The bodies of executed prisoners may have been used for scientific research. At the request of physiologist , at least 35 prisoners' eyes were removed immediately after their death for research into night vision.Gattermann, Rolf, and Volker Neumann: Die Geschichte der Zoologie in Halla (Saale) in: Zoologie 2002, Mitteilungen der Deutschen Zoologischen Gesellschaft, pp. 16 ff.
