21.   A second test on Friday night found no anthrax contamination.

22.   A second test puts patients on the drugs for two months, followed by one month off.

23.   A second test using another method produced a similar result.

24.   A second test will be held.

25.   After cooling down, he eventually took the second test, but it was too late.

26.   After an initial inconclusive result, when he was too emotionally drained to provide an accurate reading, he passed a second test, police say.

27.   But a second test on the same fragment with another machine, this one conducted by the FBI, did not show traces of explosives.

28.   But Darden argued that the second test was far more accurate.

29.   But he failed the second test when victory in Vietnam became unattainable.

30.   But Lukas ordered a second test, which proved negative, and the issue is still undecided.