Changes in lymphocyte counts over time after initiation of ART. Absolute numbers of CD19⁺ B cells (A), CD4⁺ (B), and CD8⁺ (C) T cells in the peripheral blood were measured over time after initiation of ART at day 0. Each line represents the trajectory for 1 individual and was generated using regression from a minimum of 3 time points after initiation of ART. Left panels represent individuals treated early after infection and right panels represent individuals treated during the chronic stage of infection.