antonyomyers antonyomyers

13-04-2016
Health

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The smallpox epidemic, Edward Jenner, and cowpox were all instrumental in the development of the first _____.

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Maditaylor1999 Maditaylor1999

15-04-2016

vaccine also pastur created pencilin

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YungRaccoon16 YungRaccoon16

12-10-2020

Answer:ITS B

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