31.   The crops in question, known as BT corn and cotton, contain a bacterial gene that causes the plants to produce a toxin that kills pests.

32.   The corn carries a gene derived from a bacterium, Bacillus thuringiensis, that produces Bt toxin, which kills pests that eat the plant.

33.   The males produce toxins that kill females after they have laid eggs, while females evolve to outwit the molecular killers.

34.   The type of household mold that produces a toxin is fairly rare, and more people are affected by more common molds.

35.   The unexpected algae bloom produced toxins that killed thousands of fish, mostly rough fish but also large numbers of striped bass and largemouth bass.

36.   The study also indicated that there were more strains producing a toxin associated with toxic shock syndrome, Schwartz said.

37.   The toxin is produced when the bacteria grow in improperly canned foods, according to the federal Centers for Disease Control and Prevention in Atlanta.

38.   The two species, the only poisonous lizards, produce toxins that are similar but not identical.

39.   There, they turn into bacteria, and the bacteria multiply and produce toxins that attack body tissues.

40.   When competing against other bacteria and microorganisms, certain molds also can produce toxins called mycotoxins.