Detection of broad functional gag-specific CD4+ T cell responses in HIV-1-infected subjects following therapeutic immunization with rMVA expressing an HIV-1 gag immunogen by Rowland-Jones Sarah L, Bowness Paul, Williams Patricia, Brown Denise, Conlon Christopher, Suttill Annie, Gleria Kati de, Dong Tao, Yang Hongbing, Ondondo Beatrice, Hanke Tomáš, McMichael Andrew, Dorrell Lucy