Alexander Bogdanov
Alexander Bogdanov was a Russian physician who’s widely hailed as one of the pioneers behind early blood transfusions. He’s also known for trying out some of those blood transfusion experiments on himself—starting in 1924, he’d started swapping out his blood with some of his patients. Four years later, on April 7th, 1928, he’d completed his final experiment, when he tried swapping out his own blood with that of a medical student suffering from malaria and tuberculosis. The student ended up making a full recovery from the procedure, but Bogdanov died pretty quickly afterward.
