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. Author manuscript; available in PMC: 2016 Aug 15.
Published in final edited form as: Vet Parasitol. 2015 Jun 20;212(0):18–24. doi: 10.1016/j.vetpar.2015.05.016

Fig. 1.

Fig. 1

Paul Erlich in his Frankfurt office, circa 1900, the father of modern chemotherapy, who worked on trypanosome diseases and popularized the concept of the ‘magic bullet’ (magische Kugel, the perfect therapeutic agent).