Sergei Chakhotin
Biologist and sociologist
Sergei Stepanovich Chakhotin was a Russian biologist, sociologist and social democrat.
Chakhotin was the inventor of a technique of "cell optical microsurgery". Wikipedia
Born: September 13, 1883, Constantinople
Died: December 24, 1973 (age 90 years), Moscow, Russia
Education: Moscow State University and Heidelberg University