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6 janv. 1930 - an efficient vaccine, or toxoid, as it is known in the cases of tetanus and diphtheria was produced against tetanus.

Ajouté au bande de temps:

Engineering 2 9/29/17

ByJosiah Valery
2 oct. 2017

Date:

6 janv. 1930
Maintenaint
~ Il y a 94 ans
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