Colonies of E. coli bacteria grown on a Hektoen enteric (HE) agar plate are seen in a microscopic image courtesy of the U.S. Centers for Disease Control (CDC). (CDC/Reuters) A company that runs a ...

Colonies of E. coli bacteria grown on a Hektoen enteric (HE) agar plate are seen in a microscopic image courtesy of the U.S. Centers for Disease Control (CDC). (CDC/Reuters) Rizzuti added that ...

Colonies of E. coli bacteria grown on a Hektoen enteric (HE) agar plate are seen in a microscopic image courtesy of the U.S. Centers for Disease Control (CDC).