21.   The cramps will generally disappear within a week.

22.   The drug also has side effects, however, including dry mouth and insomnia, although they often disappear within weeks.

23.   The most dramatic recovery was that of Bill Boyer, a Sylmar man whose partial paralysis disappeared within half an hour of the start of treatment.

24.   The new study also found that when women stopped using postmenopausal hormones, the increased risk of developing breast cancer disappeared within two years.

25.   The signature of water disappeared within a half-hour of each of the impacts, suggesting that the water had come from a cometary source and not Jupiter itself.

26.   The symptoms almost never last more than a day and generally disappear within a few minutes or hours.

27.   The symptoms disappeared within a week when he switched back to black tea.

28.   They emerge in May and disappear within three weeks.

29.   Whatever advantage they now possess will disappear within the next year and a half as the Internet becomes more commercialized and easier to use.

30.   When they stopped, it disappeared within a few moments.