1.   It allowed drug companies to target specific enzymes in HIV.

2.   The compounds work by targeting enzymes called cyclooxygenases that help build prostaglandins.

3.   Crixivan and Invirase belong to a new class of AIDS drugs that target an enzyme needed in the reproduction of HIV, the virus causing AIDS.

4.   Existing AIDS drugs generally work inside cells, targeting viral enzymes involved in the replication of the virus.

5.   He said the compound could work if it targets only the sperm enzyme without affecting enzymes in other body parts and creating side effects.

6.   NSAIDs target an enzyme called cyclo-oxegenase that is responsible for much inflammation accompanying pain.

7.   So lead researcher Hassan Jomaa of Justus-Liebig University and colleagues tested whether it also would target the enzyme in the malaria parasite.