Lamivudin- TF, carbovir- TF (den aktive trifosfatform af abacavir) og zidovudin- TF er substrater for og kompetitive hæmmere af HIV revers transkriptase (RT).
Lamivudine-TP, carbovir-TP (the active triphosphate form of abacavir) and zidovudine-TP are substrates for and competitive inhibitors of HIV reverse transcriptase (RT).