1 janv. 1928 - Fredrick Griffins
Description:
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.Ajouté au bande de temps:
Date:
1 janv. 1928
Maintenaint
~ Il y a 97 ans