Anti-HIV IgA isotypes: differential virion capture and inhibition of transcytosis are linked to prevention of mucosal R5 SHIV transmission. Por Watkins, J, Sholukh, A, Mukhtar, M, Siddappa, N, Lakhashe, S, Kim, M, Reinherz, E, Gupta, S, Forthal, D, Sattentau, Q, Villinger, F, Corti, D, Ruprecht, R