Envelope deglycosylation enhances antigenicity of HIV-1 gp41 epitopes for both broad neutralizing antibodies and their unmutated ancestor antibodies. - Ma BJ; Alam SM; Go EP; Lu X; Desaire H; Tomaras GD; Bowman C; Sutherland LL; Scearce RM; Santra S; Letvin NL; Kepler TB; et al. (PLoS pathogens, 2011)