Corpora non agunt nisi fixata. Maxim behind all of Ehrlich's great discoveries.
D001152:Arsenicals / Q000266:history*; D005060:Europe; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D010600:Pharmacology / Q000266:history*; D011955:Receptors, Drug; D014118:Toxins, Biological / Q000266:history*
D001152:Arsenicals; D011955:Receptors, Drug; D014118:Toxins, Biological