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26 oct 1950 año - National Institutes of Health Discoveries

Descripción:

Penecillin, Streptomycin
vaccines(1955)
increased average lifespan

Añadido al timeline:

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ByChristine Zhu
29 mar 2019
0
0
244

fecha:

26 oct 1950 año
Ahora mismo
~ 74 years ago
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