91.   But he said nothing about needle exchange programs, in which drug users are provided with sterile syringes in an effort to reduce the transmission of the virus.

92.   But Jose Mello said his brother, Roberto, and Escobar were known drug users, particularly of cocaine.

93.   But Seth persisted, arguing that not all ravegoers are drug users, and Hutchinson, sensing a father-son moment and an interesting learning experience, relented.

94.   But mandatory drug sentencing laws have imprisoned large numbers of intravenous drug users, and many of those prisoners are infected with HIV.

95.   But such tests are not performed randomly, and a drug user might pass one by ceasing drug usage several days in advance.

96.   But opponents say needle exchange programs abet drug users.

97.   But the practice also exempts from scrutiny the vast majority of drug users and couriers who are by definition non-black.

98.   But that drop may well have more to do with community policing and demographics than with locking up drug users and dealers.

99.   But trials that examine sexually transmitted diseases may recruit subjects who have had many sexual partners, and studies of drug users seek out addicts.

100.   Can a heavy drug user be an effective parent without outside support?