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1 janv. 1796 - Edward Jenner tests his hypothesis

Description:

by inoculating an 8 year old boy with cowpox = variolation.

Ajouté au bande de temps:

B HLTH 224

ByKelly Stevens
13 déc. 2018
1
0
908

Date:

1 janv. 1796
Maintenaint
~ Il y a 229 ans
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