Figure 1 shows the percentage uptake of apoptotic neutrophils by BMDM. The macrophages were incubated 48 hours before the interaction assay with apoptotic neutrophils, RGDS followed by apoptotic neutrophils or medium. They were then washed and cultured in medium containing cytokines or medium alone before washing and a 30-minute interaction with apoptotic PMN; mean ± standard error (SE), n = 10; * P < .01.