Effects of in vivo MafG and c-Maf knockdown in BDL mice. Mice were treated with lentivirus carrying scrambled (SC), MafG, c-Maf or both MafG and c-Maf siRNA. In part A, pilot experiment showed transduction efficiency as estimated by % hepatocytes that were positive for GFP to fall significantly by day 7 following a single injection. However, transduction efficiency was excellent even at day 14 with repeated injections (day 6 and 10). Mice were subjected to BDL or sham surgery and injected with lentivirus at the time of BDL, on day 6 and 10 and sacrificed on day 14 for determination of necrosis by H&E (B), apoptosis by TUNEL (C) and fibrosis by Sirius red staining (D). See Table I for quantitation of these (100× for A and B and C). See Methods for details.