Various, Trials of war criminals before the Nuernberg military tribunals under control council law no…
“ For until April 1943 it is stated explicitly in the Ding diary that in each series of experiments the infection was performed by means of cultural virus bred in the yolk sacs of hens’ eggs which Ding obtained from the Robert Koch Institute in Berlin. After 11 April 1943, Ding infected with fresh blood taken from persons suffering from typhus. But during this period, too, the use of passage persons was superfluous because Ding always had persons at his disposal who had contracted typhus spontaneously, and he could take the fresh infected blood from them. ”
