Lactobacilli are bacteria that are commonly known for creating lactic acid

These bacteria can be found in the mouth, intestine, and vagina. 

E. coli is an abbreviation for Escherichia, which is a large and diverse group of bacteria.

Strep throat is a bacterial infection in the throat and the tonsils.

 Some strains are capable of producing a highly heat-stable protein toxin that causes illness in humans.