(A) Comparison of the exon structure of the human TGF-β2 mRNA with the ESTs BP214137 and BF752669 containing the additional alternative exon 2B. Lines depict the 5'-UTR, 3'-UTR and introns. (B) Expression of both transcript variants (upper panel, 5-TGFB2E1B/3-TGFB2E2B) and expression of the splice variant TGF-β2B (lower panel; 5-HTB2CP/3-HTB2CP) is shown. (C) Exon structure of the human TGF-β3 mRNA. Lines depict the 5'-UTR and 3'-UTR. (D) Expression pattern of the TGF-β3 gene in human prostatic cells (left panel, 5-TGFB3E1/3-TGFB3E2). Additionally, GAPDH expression of all cell lines studied is shown. Ctrl, control.