1 ene 1928 año - Fredrick Griffins
Descripción:
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.
Añadido al timeline:
fecha:
1 ene 1928 año
Ahora mismo
~ 96 years ago