1.   But at least one prominent E.coli expert argues that putting the toxin at the center of health efforts is the wisest course.

2.   By putting toxins into their fruits, the two species of nightshade seem to have struck an evolutionary compromise.

3.   Families there sued W. R. Grace and its subsidiary, Beatrice Foods, claiming the manufacturers put toxins into Woburn well water that caused children to die of leukemia.

4.   Iraq has put the toxin in missiles and bombs.