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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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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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By
Christine Zhu
29 mar 2019
0
0
299
fecha:
26 oct 1950 año
Ahora mismo
~ 75 years ago
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