PDGFRB and Hepatic fibrosis: Previous studies have revealed that bone marrow mesenchymal stromal cells (BMSCs) can migrate to the damaged liver and distribute in the fibrotic area (angiogenic area).27, 28, 29 To explore whether PDGFR-β was highly expressed on these recruited BMSCs in the fibrotic liver, chimera mice with EGFP+ BMSCs were fed an MCDHF diet for 56 days to induce liver fibrosis, then the hepatic expression of PDGFR-β was examined by immunofluorescence staining.