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1 jan 1884 ano - 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.

Adicionado na linha do tempo:

Science

ByFede 2005
24 jan 2020

Data:

1 jan 1884 ano
Agora
~ 140 years ago
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