100 years of chemistry vs. bacteria, episode 2. Paul Ehrlich, Salvarsan and chemotherapy

In 1890, Robert Koch appoints Paul Ehrlich his assistant. Although Ehrlich (1854-1915) is above all a medical doctor (together with Emil Adolf von Behring he develops a vaccine against diphtheria), he is primarily fascinated by chemistry. Project ‘100 years of antibiotics’ Episode 1. Louis Pasteur vs. Robert Koch Episode 2. Salvarsan and Paul Ehrlich’s chemotherapy
100 years of chemistry vs. bacteria, episode 1. Louis Pasteur vs. Robert Koch

In long-term conflicts, often we can hardly tell when they started, or what their origin was. And who played what part? Often, the beholder is the judge of the answer; or the latter depends on the moment of reflection on past events. Dutch 17th century history mentions four sea wars with the English. English history