Hamilton Naki (26 June 1926 – 29 May 2005) was a black laboratory assistant to white cardiac surgeon Christiaan Barnard in South Africa under apartheid. He was recognised for his surgical skills and for his being able to teach medical students and physicians such skills despite not having received a formal medical education, and took a leading role in organ transplant research on animals.
http://en.wikipedia.org/wiki/Hamilton_Naki
Hamilton Naki (26 June 1926 – 29 May 2005) was a black laboratory assistant to white cardiac surgeon Christiaan Barnard in South Africa under apartheid. He was recognised for his surgical skills and for his being able to teach medical students and physicians such skills despite not having received a formal medical education, and took a leading role in organ transplant research on animals.
http://en.wikipedia.org/wiki/Hamilton_Naki