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You can write the usual soup or simply how it was . That is far from beinng unkown. During the time of the 30s and 40s it was known that certain attributes are passed by heredity but the location in the cell and how it was passed was unknown. In the German Kaiser Wilhelm Institute in Berlin Dahlem the Electron Microscope and X-Ray Spectrography had been developed to identify macro proteins in the cell plasma.The alternative hypothesis was heredity being located on the (known) solid protein helix found in every cell. In the Institute of Anthropology, Heredity and Eugenics the Plasma approach was researched, in New York (Avery) the DNA approach. Both were financed by the Rockefeller foundation. The Chief of the German group was Ottma von Verschuer. He had a doctor student who already held a doctor title in anthropology, obtained in the Faculty of Biology in Munich and wanted to have another one in human medicine, his name: Josef Mengele. Verschuer had informed the Rockefeller foundation that Mengele had entered the SS and would continue his"research" in Auschwitz. He was specialist in twin studies. In the blood of twins everything which is different must be acquired during later life (liked immune bodies), it cannot be the place of the "heredity protein". According to the MaxPlanck Institute in Berlin Dahlem, the former Kaiser Wilhelm Institute, Mengele had sent blood samples to Berlin for protein identification. He seemed also to have experimented with antiproteins, changig or blocking the effects of the alleged heredity protein (the eye colour change experiments).That his results had been disappeared you can believe or not. In 1946 Avery prove that the DNA was it, what everybody was searching for. What would have happened if Mengele's approach would have been the correct hypothesis? There I would start a book.

what was the purpose of the nazi experiments vs that of the japanese? (trying to prove racial theories? study limits of human endurance? simple sadism?

who were the victims of the experiments and why were they chosen?

How scientific were the methods used? (double blinding, replication, use of control groups, etc.)

who carried out these experiments, and what credentials did they have to do scientific research?

Was there any legitimate purpose to any of the experiments?

What was the fate of those being experimented on, and of those responsible for the experiments?