Q: I have seen so many headlines saying that vegetables are contaminated with E. coli bacteria. I grow a lot of my own vegetables, and I am wondering how this happens and how to prevent it.

The arrow designates where investigators believe RNA polymerase is sitting at, or near, the initiation site for a gene. Along the chromosome, growing polysomes can be seen.

A string of American fast-food chains and restaurants are pulling fresh onions from some of their locations because of E. Coli food poisoning risks. Yum Brands, the parent of Taco Bell ...

“They’re a really great place for things like bacteria like E. coli to grow,” Shumaker said. “They have that moisture content that bacteria really like. Once they become damaged, that can ...