1.   It appeared the water supply had been tainted with a deadly toxin.

2.   The water had been tainted with a deadly toxin.

3.   By then, the bacteria have already released large quantities of their deadly toxins into the body.

4.   Dr. John Collier at Harvard Medical School, for example, has found two promising drugs that may block the deadly toxin released by anthrax bacteria.

5.   In the teleconference, Perkins said rifampin might be particularly useful, since it blocks protein synthesis and so might stop anthrax bacteria from producing their deadly toxin.

6.   Others were drawn to ricin, a deadly toxin that can be created from castor beans.

7.   Scientists have worked out the exact three-dimensional structure of the edema factor, the last of three components in the deadly toxin produced by the anthrax bacterium.

8.   The bags could be programmed to deploy automatically on sensing a deadly toxin.

9.   The Detrick scientists also learned how to reap the poisons that some bacteria excrete to yield deadly toxins that could be sprayed directly on foes.

10.   The following night his bowels ruptured, sending deadly toxins through his body.