Fig. 1From: GREM1/PPP2R3A expression in heterogeneous fibroblasts initiates pulmonary fibrosisClassification of fibroblasts using single-cell transcriptome sequencing. A Single-cell sequencing divided all the cells in lung tissue into 24 subtypes. B Fibroblasts were separated based on Col1a1 and Col3a1 expression. C A marker gene used for the subtyping of fibroblasts. D Fibroblasts were subdivided into seven subtypesBack to article page