11.   A lawsuit filed Wednesday claims that the chemicals caused the illnesses of the three workers at the plant and four others from IBM fabrication rooms here.

12.   A moratorium was called on the practice after lawsuits were filed by groups that contended that the chemicals caused cancer.

13.   But Paul said that these chemicals can cause vaginal inflammation and actually make a woman more susceptible to infection with the human immunodeficiency virus.

14.   Cerus said its chemical did not cause cancer when tested extensively in mice that had been genetically engineered to develop tumors easily.

15.   In the secondary phase, the injury can worsen, as toxic chemicals can cause the brain to swell.

16.   It is unclear whether the chemical causes cancer in humans.

17.   Khattak said that the findings offer strong evidence that these chemicals cause birth defects.

18.   That represents an amount that is about one-third the limit of emissions for nitrogen oxide, the chemicals causing smog.

19.   The chemicals can cause burns, or, if the child puts his hand in his mouth, the chemicals can be ingested.

20.   The chemicals can cause irritation to respiratory tracts, eyes, noses and skin, symptoms some of the workers have complained of.