S100B and infection: In addition to the six epitopes targeted during acute infection, weak CD8+ T cell responses were also detected against four other epitopes during the chronic phase of infection (day 476): Env Cw4-SF9 (190 SFC), Env A24-RL9 (84 SFC), Env A01-RY9 (80 SFC), and Nef A01-YT9 (70 SFC) (Table S5 in Text S1).