Richard Friedrich Johannes Pfeiffer

Richard Friedrich Johannes Pfeiffer
c. 1928
Born	(1858-03-27)27 March 1858 Treustädt (Prussia, now Greater Poland Voivodeship, Poland)
Died	15 September 1945(1945-09-15) (aged 87) Bad Landek (Prussia, now Lower Silesian Voivodeship, southwestern Poland)
Known for	Endotoxins discovery
Awards	Fellow of the Royal Society (FRS),[1] Pasteur medal
Scientific career
Fields	Microbiology

Richard Friedrich Johannes Pfeiffer FRS^[1] (27 March 1858 – 15 September 1945) was a German physician and bacteriologist. Pfeiffer was born to Otto Pfeiffer, a German pastor of the local Evangelical parish, and Natalia née Jüttner, in Treustädt, Province of Posen (Prussia), and died in Bad Landeck (Prussia, now Poland).