HIV isolate AZT (μM) Fold increase 3TC (μM) Fold increase D4T (μM) Fold increase
HI/4C 0.001418 0.01 15.35 64.58 ND ND
HI/15C 0.03146 0.19 2.645 11.13 66.23 76.18
HI/23C 72.13 445.25 8.041 33.83 20.82 23.95
HI/35C 3.071 18.96 3.503 14.74 45.66 52.52
HI/53C 48.81 301.30 14.41 60.62 33.41 38.43
HI/60C 82.73 510.68 5.403 22.73 18.55 21.34
Standard IC50 0.162   0.2377   0.8694  
Table 1: Fold increases in IC50 values of AZT, 3TC and d4T against HIV isolates.
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