Blood from human, rhesus macaque (RM), cynomolgus macaque (CM), pigtail macaque (PTM), and African green monkey (AGM) was gated for HLA-DR+ lymphocyte lineage-negative cells and divided into four populations based on CD14 and CD16 expression. CD11c staining on cell subsets CD14−CD16−, CD14+CD16−, CD14+CD16+ and CD14−CD16+ was plotted.