41.   At this point, there is no evidence that laser therapy causes cancer.

42.   Atrazine causes mammary tumors in rats, prompting concerns that it may cause cancer in humans.

43.   Banned toxic chemicals that can cause cancer are sneaking into food more often and at higher levels than anyone suspected.

44.   Bob Ratliffe, who worked at McCaw, said Barksdale was especially cool-headed when reports suggested that cellular phones caused cancer.

45.   Bile acids can damage cells and possibly cause cancer.

46.   Both chemicals can harm the nervous system and other organs, and both are suspected of causing cancer.

47.   Both chemicals are suspected of causing cancer.

48.   Breathing excessive dust or fumes may cause cancer.

49.   -- Methylene chloride, a solvent, found in glues, that causes nerve and liver damage and may cause cancer.

50.   A huge glob of it, consistently eaten over a long time, could cause cancer in a rat.