Figure 1. Identification of human inflammatory dendritic cells. (A) Human tumor ascites contain two populations of antigen-presenting cells: dendritic cells (DCs) and macrophages. Giemsa/May–Grünwald staining. Bar = 10 μm. (B) Like their murine counterparts, human inflammatory DCs differentiate from monocytes that are recruited by inflammatory microenvironments. These DCs induce TH17 responses, whereas inflammatory macrophages do not.