title: Old Chinese observation correlated to ABO groups.
mesh_terms: D000017:ABO Blood-Group System / Q000235:genetics*; D005826:Genetics, Medical / Q000266:history*; D049672:History, 19th Century; D006801:Humans; D008516:Medicine, Chinese Traditional; D008518:Medicine, East Asian Traditional
chemical_list: D000017:ABO Blood-Group System