1.   And he recounts the histories of patients who experienced significant improvement after taking the substances, some of whom began feeling better within a week or two.

2.   At the Olympics, if an athlete takes a banned substance, that athlete can be suspended, even if the substance was ingested inadvertently.

3.   Almost everyone says children should not take the substance.

4.   But researchers cautioned consumers to be aware that many herbal products did not contain what their labels stated and urged them to tell their doctors before taking the substances.

5.   Experiment by experiment, the abstractions of quantum theory are taking on substance, impinging on phenomena closer to home.

6.   He has seen confusion and fear in the eyes of those who had unwittingly taken a substance they believed was clean.

7.   Mailhott, Fry, and the recruit who took the substance declined to be interviewed.

8.   Mike Whitmarsh, one of the best hopes for a U.S. gold medal, adamantly denies taking a substance banned by the Olympics.

9.   She has vehemently denied taking banned substances and has said that she felt unfairly treated by the track federation during the protracted hearing process.

10.   She has vehemently denied taking banned substances and has questioned the validity of drug testing for women that involves a comparison of hormonal levels.