Smad3 mediates activin-induced transcription of follicle-stimulating hormone beta-subunit gene. Related Articles Smad3 mediates activin-induced transcription of follicle-stimulating hormone beta-subunit gene. Mol Endocrinol. 2005 Jul;19(7):1849-58 Authors: Suszko MI, Balkin DM, Chen Y, Woodruff TKOriginal Article