Later he became an Associate Professor there and Senior House Physician to the Charité Hospital in Berlin. In 1882 Ehrlich became Titular Professor and in 1887 he qualified, as a result of his thesis Das Sauerstoffbedürfnis des Organismus (The need of the organism for oxygen) as a Privatdozent (unpaid lecturer or instructor) in the Faculty of Medicine in the University of Berlin. From it was also derived the Gram method of staining bacteria so much used by modern bacteriologists. In 1882 Ehrlich published his method of staining the tubercle bacillus that Koch had discovered and this method was the basis of the subsequent modifications introduced by Ziehl and Neelson, which are still used today. Ehrlich showed that all the dyes used could be classified as being basic, acid or neutral and his work on the staining of granules in blood cells laid the foundations of future work on haematology and the staining of tissues. In 1878 he was appointed assistant to Professor Frerichs at the Berlin Medical Clinic, who gave him every facility to continue his work with these dyes and the staining of tissues with them. This work was one of the results of his great interest in the aniline dyes discovered by W. In 1878 he obtained his doctorate of medicine by means of a dissertation on the theory and practice of staining animal tissues. He was the son of Ismar Ehrlich and his wife Rosa Weigert, whose nephew was the great bacteriologist Karl Weigert.Įhrlich was educated at the Gymnasium at Breslau and subsequently at the Universities of Breslau, Strassburg, Freiburg-im-Breisgau and Leipzig.

P aul Ehrlich was born on Maat Strehlen, in Upper Silesia *, Germany. Share via Email: Paul Ehrlich – Biographical Share this content via Email.Share on LinkedIn: Paul Ehrlich – Biographical Share this content on LinkedIn.Tweet: Paul Ehrlich – Biographical Share this content on Twitter.Share on Facebook: Paul Ehrlich – Biographical Share this content on Facebook.

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