[The Gram preparation is 100 years old].
D001431:Bacteriological Techniques / Q000266:history; D003718:Denmark; D049672:History, 19th Century; D049673:History, 20th Century; D013183:Sputum / Q000382:microbiology; D013194:Staining and Labeling / Q000266:history*
Das Gram-Präparat wird hundert Jahre alt.