The etiology of liver damage imparts cytokines transforming growth factor beta1 or interleukin-13 as driving forces in fibrogenesis.
Weng HL, Liu Y, Chen JL, Huang T, Xu LJ, Godoy P, Hu JH, Zhou C, Stickel F, Marx A, et al. Hepatology. 2009 Jul; 50(1):230-43.