24 jul 1898 año - Paul-Louis Simond
Descripción:
 -He is a French physician who worked with Pasteur and implemented a rat experiment by putting a healthy rat and a infected together by using a scientific method to show connections to the plague.
Picture Reference:
https://twitter.com/louis_simond 
Añadido al timeline:
fecha:
24 jul 1898 año
Ahora mismo
 ~ 127 years ago 
Fotos:
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