by contrast , azt ( 3'-azido-2',3'-dideoxythymidine ) , which is used for the treatment of aids , and ddc ( 2',3'-dideoxycytidine ) and ddi ( 2',3'-dideoxyinosine ) , whose clinical application is being assessed , inhibit both hiv-1 and hiv-2 at concentrations that , depending on the cell systems , are 2 to 4 orders of magnitude below their cytotoxic concentration .
C0001175
aids
C0012132
dideoxycytidine