- Human immunodeficiency virus type 2 envelope glycoprotein binds to CD8 as well as to CD4 molecules on human T cells. Kaneko, H., Neoh, L.P., Takeda, N., Akimoto, H., Hishikawa, T., Hashimoto, H., Hirose, S., Karaki, S., Takiguchi, M., Nakauchi, H., Kaneko, Y., Yamamoto, N., Sekigawa, I. J. Virol. (1997)