C5AR1 and infection: On the other hand, AMs gradually disappeared from the BAL fluid after PVM infection (Figure 1E), whereafter monocytes (Ly6Chi CD88+ CD11b+ cells) and monocyte-derived cells (MCs) (characterized as CD11c+, MHCII+, CD64+ and CD88+ cells) replenished the myeloid cell pool in the BAL fluid (Figures 1F, G).