Fig. 4. Competition of polymer vs. gp120 binding to dendritic cells. Dendritic cells were firstly incubated with the indicated concentration of unlabeled polymer (Panel A – Linear P1; Panel B – 5-arm star P2; Panel C – 8-arm star P3; Panel D – summary of polymers at 10 μg ml^–1) and then probed with FITC gp120. Cells were analyzed by flow cytometry and the data represent one of 3 donors.