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    • Transforming growth factor beta activates Smad2 in the absence of receptor endocytosis 

      Lu, Z. X.; Murray, J. T.; Luo, W. J.; Li, H. L.; Wu, X. P.; Xu, H. X.; Backer, J. M.; Chen, Y. G.; 吕忠显 (2002)
      Like many other cell surface receptors, transforming growth factor beta (TGF-beta) receptors are internalized upon ligand stimulation. Given that the signaling-facilitating molecules Smad anchor for receptor activation ...