61.   A study of mice with torn muscles suggests that high doses of decorin, an experimental drug, heals muscles by slowing fibroblasts.

62.   Aerosols and air fresheners contain dozens of volatile organic compounds such as xylene, ketones and aldehydes, which can be toxic in high doses.

63.   All medicines are toxic at high doses.

64.   But a study has shown development of tumors among the offspring of mice that received very high daily doses of AZT during pregnancy.

65.   But a new study casts fresh doubts on its effectiveness at high doses.

66.   But Alexander cautioned that the study had used unusually high doses of progesterone and of the monkey virus.

67.   But high doses of folic acid may overcome any predisposition.

68.   But if they take high doses of birth control pills, just two will become pregnant.

69.   But researchers wanted to know if a high dose would be more effective and just as safe as the regular one.

70.   But various forms of cancer treatment, such as high doses of chemotherapy, kill stem cells.