1.   E. coli bacteria come from animal fecal matter and generally find their way into meat at processing plants.

2.   He was particularly interested in how some bacteria come to produce an enzyme, beta-lactamase, that breaks down penicillin and similar drugs, making them ineffective.

3.   No evidence could be found that the bacterium came from the operating room or treatment afterward, Hull said.

4.   Thanks to great work by the King County, Wash., Health Department, we had lab evidence indicating the bacteria came from a single source.

5.   The bacteria came from the abdomen of a bee entombed in amber.

6.   When the bacteria come into contact with sugar, they produce lactic acid, which erodes the enamel.

7.   But the doctor doubts the bacteria will come back, and even if it does, his immune system should now be able to handle it.

8.   But the experts have been unable to figure out if the bacteria came from this country or abroad.

9.   Early reports that the bacteria came from a water fountain or other decorative water installations at the flower show were still not confirmed.

10.   Investigators are focusing on where the bacteria came from and who has the know-how to make the refined strain mailed to Senate Majority Leader Tom Daschle.