tokens: METHODS AND RESULTS : In order to investigate whether the HAART component zidovudine ( 3'-azido-2',3'-deoxythymidine ; AZT ) triggers the Fas - dependent cell - death pathway and cause cytoskeletal disruption in a murine model of DCM , 8 - week - old transgenic ( expressing Fas ligand in the myocardium : FasL Tg ) and non - transgenic ( NTg ) mice received water ad libitum containing different concentrations of AZT ( 0 , 0 .