Emtricitabin- resistente virus med M184V/ I- mutationen var krydsresistente over for lamivudin, men beholdt følsomhed over for didanosin, stavudin, tenofovir, zalcitabin og zidovudin.
Emtricitabine-resistant viruses with the M184V/ I mutation were cross-resistant to lamivudine, but retained sensitivity to didanosine, stavudine, tenofovir, zalcitabine and zidovudine.