jan 1, 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.Added to timeline:
Date:
jan 1, 1928
Now
~ 96 years ago
