Antibody responses to V2 loop are induced by CRF01_A E and not Clade B envelopes - Karasavvas N; Karnasuta C; Madnote S; Arworn D; Sinangil F; Rerks-Ngarm S; O'Connell RJ; Nitayaphan S; Ngauy V; Kim JH; Michael NL; de Souza MS (Retrovirology, 2012)