Extended Data Fig. 5: Cell-type annotation for the mesenchymal lineage using UMAP plots.

a, Lineage-level UMAP for mesenchymal cells generated after final cell-type annotation. b, Proportion of the total number of mesenchymal cells by disease state (unaffected, less affected or more affected). Alveolar fibroblast cells are the majority mesenchymal cell type across all groups, although the proportion of disease-associated, activated fibrotic fibroblasts increases in PF. c,d, Select cell-type gene markers visualized in UMAP space across all mesenchymal cells (c) and split by cell type (d). For c and d, boxes indicate the cell type the gene marks. Gray-dashed lines indicate general mesenchymal lineage markers.