A note from history: The discovery of blood cells.
Hajdu
Steven I
SI
D001773:Blood Cells / Q000166:cytology; D006405:Hematology / Q000266:history*; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008853:Microscopy / Q000266:history*