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1 янв 1928 г. - Fredrick Griffins

Описание:

Fredrick Griffins, a British Army medical officer, was trying to find a vaccine for a strain of bacteria that caused pneumonia. He tested 2 strains, a benign and deadly, and found that if heated the benign and deactivated strain became lethal.

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13 янв 2020
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Дата:

1 янв 1928 г.
Сейчас
~ 97 г назад