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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

722

Date:

1 janv. 1796

Maintenaint

~ Il y a 228 ans

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