Paul Ehrlich and Almroth Wright.
Gillespie
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D001432:Bacteriology / Q000266:history*; D002625:Chemistry, Organic / Q000266:history*; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007167:Immunotherapy / Q000266:history; D006113:United Kingdom