21.   This includes follow-up testing, treatment and anxiety over a positive reading that may or may not prove accurate.

22.   This is the most positive reading of the public mood in three years.

23.   Those stocks rose smartly after a positive reading on earnings from the USAir Group.

24.   Though that would indicate slower growth, a positive reading still means the number of companies reporting increased business was larger than those reporting a fall-off.

25.   Vaccination can cause a positive reading on a test.

26.   Pearce gave a similar positive reading after taking Sudafed before a game against London Irish in February.

27.   A few samples yielded positive readings of combustibility, but none were high enough to pose a hazard.

28.   All mail addressed to the federal government is irradiated to kill any possible anthrax, but even the presence of dead spores could produce an initial positive reading.

29.   Also Tuesday, the International Monetary Fund reported that it had received a positive reading from a batch of mail at its facility.

30.   Broadly based market gauges also displayed positive readings.