Paul Ralph Ehrlich was a German #bacteriologist, #hematologist and #immunologist whose pioneering…
Paul Ralph Ehrlich was a German #bacteriologist, #hematologist and #immunologist whose pioneering work in #chemotherapy included the discovery of #Salvarsan (arsphenamine), the first effective treatment for #syphilis against the spirochete #Treponema pallidum.
His research in the histology of the blood established hematology as a field. Ehrlich also developed new staining methods for #microscopic studies on live tissue. At a time when little was understood about the mechanism of disease caused by bacteria, he proposed the side-chain theory as a chemical explanation of #immunity, the body's defenses against #infection. Though broadly incorrect, the theory nevertheless stimulated further work on the problem.
He shared the 1908 #NobelPrize for Physiology or Medicine with Russian bacteriologist, Élie Metchnikoff.
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