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"Serum straight from the horse" inoculation caricature

German caricature showing von Behring extracting horse serum with a tap. Even in caricature, the recognition went to Behring and not Ehrlich. (Courtesy of the Wellcome Collection, London. Public domain.)

Associated Disorders

  • asplenia
  • deficiency of a terminal complement component (C5-9)
  • deficiency of properdin