these results suggest that the ratio of dideoxynucleoside triphosphate to normal deoxynucleoside triphosphate is a crucial factor in determining the antiviral activity of dideoxynucleosides in hiv target cells , and that the lower levels of dttp may account for the antiretroviral activity of azt in the face of inefficient phosphorylation of this compound .
C0012136
dideoxynucleosides
C0043474
azt