title: A histochemical reaction from 1807: iron tannin.
mesh_terms: D006651:Histocytochemistry / Q000266:history*; D049672:History, 19th Century; D007501:Iron; D010944:Plants; D013194:Staining and Labeling / Q000266:history; D013634:Tannins
chemical_list: D013634:Tannins; D007501:Iron