Effect of TGF-β1 expression on a selected subset of miRNAs. Results of Northern blot analysis of total RNA extracted from Mutu-I, Kem-I, and Sav* cells before and after induction (at 2 h and 24 h) with TGF-β1 are shown. Specific probes to measure the level of mature miRNAs miR-30d, miR-16, miR-155, miR-146a, miR-182, EBV-miR-BART22, and EBV–miR–BHRF1-2 were used. U6 snRNA was used as a loading control.