- Antibody to human and simian retrovirus, HTLV-I, HTLV-II, HIV, STLV-III, and SRV-I not increased in patients with multiple sclerosis. Madden, D.L., Mundon, F.K., Tzan, N.R., Fuccillo, D.A., Dalakas, M.C., Calabrese, V., Elizan, T.S., Román, G.C., Sever, J.L. Ann. Neurol. (1988)