1 janv. 1884 - 1884: Hans Christian Gram develops a way of classifying bacteria into two major categories, Gram-positive and Gram-negative. This technique, the Gram stain, continues to be a standard procedure in medical microbiology today.
Ajouté au bande de temps:
Date:
1 janv. 1884
Maintenaint
~ Il y a 140 ans
