A 13% nationwide decline?
	HIV attaches to a receptor and slips its RNA into the cell.
	Viral RNA copies itself in DNA.
	Viral DNA enters host genes; cell makes more viral RNA.
	New viral proteins cut to size before leaving.

HIV nix? It's not just the new protease inhibitors. Now we know how the virus invades cells. The Why Files examines how medicine can -- or could -- attack each step in the viral life cycle. [Posted Mar. 20, 1997]

1996: end of the beginning for the AIDS epidemic?

Immune system cell illustration © George Eade, Eade Creative Services, Inc.

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