| Keywords | Lamivudine-13C15N2 d2, Reference Standards, Stable Isotopes, Metabolites, Lamivir-13C 15N2 d2, Virolam-13C 15N2 d2, Zeffix-13C 15N2 d2, ß-L-2’,3’-Dideoxy-3’-thiacytidine-13C 15N2 d2, ß-L-3’-Thia-2’,3’-dideoxycytidine-13C 15N2 d2, C613C2H9D215N2NO3 |