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Expression level of CD69 among CD3+ CD4+ cells. (a) Representative contour plots showing the frequency of CD69 expression among CD3+ CD4+ cells. The percentage of cells expressing CD69 (P8) was analyzed by flow cytometry on gated CD3+ CD4+ T cells (P6). (b) Pattern of the expression of CD69 among CD3+ CD4+cells of P. vivax-exposed individuals in response to different PvTRAgs. Each bar indicates the mean percentage ± the standard error of the mean.
