CCR2 and idiopathic pulmonary fibrosis: Clusters #6075, #6064, and #6056, which were prevalent in IPF, were comprised of CD64+ CD11bhi CD11chi CD14+ CD36hi CD84hi CCR2– monocyte subpopulations (Figures 2D, E), different from CD14+CCR2+ monocyte subpopulations (clusters #6078, #6082) (Figures 2D, 3A).