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Fig. 2. Effect of TGFβ signals on expression of endothelial and mural markers in MESECs. (A-D) Levels of mRNA expression for claudin 5 (A), SMA (B), SM22
(C) and calponin (D) in MESECs cultured in the absence (–) or presence of TGFβ2 (Tβ) or TβR-I inhibitor (inhib) as analyzed by quantitative real-time RT-PCR. Error bars indicate s.d. (E) Protein levels of claudin 5 (top), SMA (middle) and
-tubulin (bottom) were examined by immunoblotting of total lysates of the MESECs described in A-D.