21.   Barry, who died Monday, was best known as a co-developer of AZT, the first drug developed to treat the virus.

22.   One elephant in Florida was cured of the infection when it was treated with famciclovir, an antiviral drug developed to treat herpes in humans.

23.   The prescription pill, developed to treat chronic pain in cancer patients and those with arthritis and back pain, has grown in popularity among drug abusers.

24.   If successful -- and safe -- it would be developed to treat the virus in all carriers.