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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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20 sept 1911 año - Rene Legendre and Henri Pieron

Descripción:

Identified sleep inducing (hypogenic) molecule that accumulates in the body during waking hours "hypnotoxin" Did this by experiments with dogs.

Añadido al timeline:

ByK
9 oct 2018
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fecha:

20 sept 1911 año
Ahora mismo
~ 114 years ago