title: Paul Ehrlich's doctoral thesis: a milestone in the study of mast cells.
mesh_terms: D004212:Academic Dissertations as Topic / Q000266:history; D005858:Germany; D006405:Hematology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008407:Mast Cells