December 19, 2016:
(1) (1797) French obstetrician and naturalist Antoine Louis Dugès is born. Along with writing a textbook on obstetrics, he also studied osteology of amphibians.
(2) (1903) American mouse geneticist and basic transplant immunologist George Davis Snell is born. He shared the shared the 1980 Nobel Prize in Physiology or Medicine for his work on antigens and their role in the immune system response.
(3) (1956) After suspicions were raised about the deaths of more than 160 patients, physician John Bodkin Adams is arrested.