Blood Transfusion

-- First recorded Blood Transfusion was done by ' Dr. Jean Baptiste Denys ' in 1667 AD.
-- A teenage boy and a labourer were transfused with small amount of sheep's blood.
-- Dr. Jean was charged with murder after he transfused calf's blood to Antaine Mauroy leading to his death.
-- Later it was found that Antaine Mauroy had died of arsenic poisoning leading to Dr. Jean's acquittal. Now wife of Antaine Mauroy was charged with his murder.
-- After the trial Dr. Jean quit practice of medicine.
-- In 1902 Dr. Karl Landsteiner discovered four blood groups making blood transfusion safe.