1.   Among his areas of research, Neu studied the mechanisms by which bacteria become resistant to certain antibiotics.

2.   And nerve-damaging pfiesteria bacteria are becoming increasingly common in the estuaries of the Southeast.

3.   As more bacteria become resistant to antibiotics, however, this practice has fallen into disfavor and is now used only in extreme cases.

4.   As some bacteria become increasingly resistant to antibiotics, doctors must combine more and stronger forms of the germ-killers to find an effective drug.

5.   But even before the terrorist attacks, some companies had begun new research, largely because many bacteria are becoming resistant to existing drugs.

6.   Could antimicrobial peptides ever replace the antibiotics to which so many bacteria have become resistant?

7.   If given indiscriminately, bacteria can become resistant to the medicine.

8.   If these bacteria become harmful, they might be difficult to destroy, creating prolonged illnesses.

9.   In addition, some bacteria could become resistant to the antibiotic, rendering the drug useless when it really is needed.

10.   It is unknown what causes the bacteria to become active, zoo officials said.