Figure 5
[ 125 I]Monocyte chemoattractant protein 1 (MCP1) displacement from chemokine (C-C motif) receptor 2 (CCR2) by haptoglobin (Hp). U937 cells were incubated with the indicated Hp concentrations for 1 h at room temperature and the specific radioactivity was measured by γ counter after free from bound separation. The graph shows one experiment representative of three.