Tyrothricin

By now it was known that pathogenic bacteria do not fare well in the soil, which is why burial is an effective way of preventing the spread of disease. Tyrothricin, an antibacterial substance, was isolated from soil bacteria.
René Jules Dubos United States 1939
Tyrothricin

By now it was known that pathogenic bacteria do not fare well in the soil, which is why burial is an effective way of preventing the spread of disease. Tyrothricin, an antibacterial substance, was isolated from soil bacteria.