How Did a Cocaine Addict Change Surgery in America

The year was 1881 and a woman bled after childbirth. The family contacted a young, 29-year-old surgeon. After deliberations, he drew blood from his own vein and transfused it to the patient. The patient recovered. German scientist Karl Landsteiner, with the help of a Polish serologist Ludwik Hirszfelt, discovered and described the ABO blood group […]