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PakB-ΔPL increases the rates of pinocytosis and phagocytosis. The uptake of fluorescent dextran (A) and beads (B) was measured for PakB-null cells (black circles) and PakB-null cells expressing GFP-PakB-ΔPL (white circles). Data presented are the average of three independent determinations for each cell line. Uptake rates were normalized to cell number, but similar results were obtained when uptake was normalized to total protein content.
