Portrait of Paul Ehrlich

Paul Ehrlich

Jewish-German physician and scientist

Lived
1854–1915

Updated September 2026

Free to read

All free classics

About Paul Ehrlich

Paul Ehrlich was a German physician and scientist who worked in the fields of hematology, immunology and antimicrobial chemotherapy. He shared the 1908 Nobel Prize in Physiology or Medicine with Élie Metchnikoff "in recognition of their work on immunity". Among his foremost achievements were finding a cure for syphilis in 1909 and inventing an important modification of the technique for Gram staining bacteria. The methods he developed for staining tissue made it possible to distinguish between different types of blood cells, which led to the ability to diagnose numerous blood diseases.

Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.

Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers, free texts from Project Gutenberg. Last updated September 2026.