CD163 and acute respiratory distress syndrome: Consistent with this result, the percentage of the pro‐inflammatory M1‐like macrophages (MHCII+CD163−) showed a significant decrease from 27.0 ± 7.2% at day 3 to 7.2 ± 3.8% at day 10 of ALI (p = 0.02, Figure 3b,c).