- In vitro selection and characterization of influenza A (A/N9) virus variants resistant to a novel neuraminidase inhibitor, A-315675. Molla, A., Kati, W., Carrick, R., Steffy, K., Shi, Y., Montgomery, D., Gusick, N., Stoll, V.S., Stewart, K.D., Ng, T.I., Maring, C., Kempf, D.J., Kohlbrenner, W. J. Virol. (2002)