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CD4 (A) and CD19 (B) cell proliferation assessed by BrdU incorporation. Fresh lymphoid PP, MLN, and spleen cells from mice orally primed with GK-1, BLS-GK-1, and BLS plus GK-1 and boosted with GK-1 or nonimmunized mice were costained with anti-BrdU (FITC), rat anti-mouse CD4 (PE), or rat anti-mouse CD19 (PE). The percentage of positive cells in each quadrant is shown. Data are representative of three independent experiments.
