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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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27 oct. 1880 - H. C. Gram developed improved staining methods (1880)
Ajouté au bande de temps:
Microscope
By
Kane Anderson
20 sept. 2017
0
0
897
Date:
27 oct. 1880
Maintenaint
~ Il y a 145 ans
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