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26 oct. 1950 - National Institutes of Health Discoveries

Description:

Penecillin, Streptomycin
vaccines(1955)
increased average lifespan

Ajouté au bande de temps:

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ByChristine Zhu
29 mars 2019
0
0
244

Date:

26 oct. 1950
Maintenaint
~ Il y a 74 ans
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