S100A8 and idiopathic pulmonary fibrosis: This analysis indicated that Mφ_LGALS3, Mφ_LGMN and Mφ_C1QC populations closely resembled IPF‐specific macrophage phenotypes, whereas Mono_S100A8 and AMφ subsets were more similar to homeostatic monocytes and alveolar macrophages, respectively.