2(1H)-Pyrimidinone, 4-amino-1-b-D-arabinofuranosyl- & Thymidine, 3'-azido-3'-deoxy- 4-Amino-1-.beta.-D-ribofuranosyl-2-(1H)-pyrimidinone & 3'-Azido-3'-deoxythymidine AIDS-000876 AIDS000876 Cytidine & AZT