Conversely, PLIN2+ fibroblasts, a suggested homeostatic lipofibroblast-like cell type (Habermann et al., 2020), were present within control and IPF alveolar septae while being poorly represented in fibroblastic foci and IPF blood vessels (Figures 3E and S2I). Here, PLIN2 is linked to idiopathic pulmonary fibrosis.