But to the three doctors who refused to help with Southam’s research, injecting cancer cells into a person without consent was a clear violation of basic human rights and the Nuremberg Code. Mandel didn’t see it that way. He had a resident give the injections in their place, and on August 27, 1963, the three doctors wrote a resignation letter citing unethical research practices. They sent it to Mandel and at least one reporter. When Mandel got the letter, he called a meeting with one of the doctors, and accused them of being overly sensitive because of their Jewish ancestry.