Edward jenner discovered vaccinations. he found that some of the dairymaids who worked with cows had suffered lesions on their hands, and that these dairymaids were immune to the more severe smallpox. then, he inoculated james phipps with material from the lesions on a dairymaids’ hands. which best explains why jenner decided to infect phipps?
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Edward jenner discovered vaccinations. he found that some of the dairymaids who worked with cows had...
History, 27.06.2020 17:01
Biology, 27.06.2020 17:01