- Zidovudine-resistant human immunodeficiency virus type 1 strains subcultured in the presence of both lamivudine and quinoxaline HBY 097 retain marked sensitivity to HBY 097 but not to lamivudine. Balzarini, J., Pelemans, H., Riess, G., Roesner, M., Winkler, I., De Clercq, E., Kleim, J.P. J. Infect. Dis. (1997)