<prompt> Fibroblast proliferation is stimulated by?TGF-βIFN-γTNF-αIL-10  <response>: TFG-β is practically always involved as an important fibrogenic agent - Robbins The most important fibrogenic mediator causing fibrosis is transforming growth factor- β. It induces the proliferation of fibroblasts, endothelial cells and specialized fibrogenic cells. It is chemotactic for fibroblasts, neutrophils, macrophages, lymphocytes and smooth muscle cells. 