5[1]Shi Y,Massague J.Mechanisms of TGF-beta signaling from cell membrane to the nucleus.Cell 2003; 113:685-700
6[2]Derynck R,Zhang YE.Smad-dependent and Smadindependent pathways in TGF-beta family signalling.Nature 2003; 425:577-584
7[3]Roberts AB,Russo A,Felici A,Flanders KC.Smad3:a key player in pathogenetic mechanisms dependent on TGF-beta.Ann N Y Acad Sci 2003; 995:1-10
8[4]Verrecchia F,Mauviel A.Control of connective tissue gene expression by TGF beta:role of Smad proteins in fibrosis.Curr Rheumatol Rep 2002; 4:143-149