AIDS (acquired immunodeficiency syndrome): The most severe stage of disease resulting from infection by the human immunodeficiency virus (HIV).

antibodies: Proteins in the blood that seek out and attach themselves to foreign substances in the blood, marking the invaders for destruction by other parts of the immune system.

AZT (also known as Retrovir or zidovudine): The first antiviral drug treatment used for managing HIV infection. clinical trials: Tests of new drugs or vaccines on humans under controlled conditions; often one group gets an experimental drug and another group gets a placebo (or inactive substance).

CMV: A herpes infection due to a virus (Cytomegalovirus) that often causes death in people with AIDS.

combination therapy: The use of two or more drugs as treatment; the combination of drugs is commonly called a drug cocktail.

condom: A latex sheath that fits snugly over an erect penis to prevent pregnancy and transmission...