MPO and hematocrit: Examining myeloid cell populations in the small intestine, we found a significant decrease in the number of CD11c+F4/80−CD163− dendritic cells (DCs) in NPP7 KO and HT mice (Figure 1H), but macrophages (stained by a cocktail of F4/80 and CD163 antibodies) and neutrophils (MPO+ cells) did not show significant differences between the groups (Figures 1I–K).