71.   Envelopes from some of that mail, discarded in a trash can, were the source of the two positive tests for anthrax.

72.   Every event in the film takes on new meaning when one character tests positive for the AIDS virus.

73.   Even biotech supporters expressed surprise at the number of positive tests, citing the findings as further incentive for the government to abandon zero tolerance for StarLink.

74.   Failure to provide a urine sample is considered a positive test.

75.   Even though Woodson eventually did give the second sample, his initial refusal counts as a positive test.

76.   Federal officials have also reported overall declines in the numbers of positive tests in the last several years, as the high-risk cases have already been identified.

77.   First, the NFL has recently made it clear to teams that blaming positive tests on supplements will no longer be tolerated.

78.   Five other states that previously reported positive tests for West Nile virus have discovered new cases this year, the centers said.

79.   Following a positive test for Down syndrome, women have the option of terminating their pregnancy.

80.   Fed officials said they had notified the FBI after the positive test.