Figure 4: Effects of low concentration of corticosterone on the phagocytosis of rat peritoneal macrophages in the presence or absence of RU486. (a) Rat peritoneal macrophages were treated with vehicle diluent (ethanol) as a control group. Macrophages were treated with RU486 (10 μM), corticosterone (150 nM), and RU486 (10 μM) plus corticosterone (150 nM), respectively. Scale bar, 37.5 μm. The phagocytic activity was estimated by the phagocytic rate (b) and index (c). The results were representative of five independent experiments performed on triplicate samples. * versus the control group, # versus the corticosterone (150 nM) group.