Animals were housed in pathogen-free animal facility and fed ad libitum. Liver fibrosis was induced in male mice (12–14-week old) by either repeated injections of carbon tetrachloride (CCl4, 0.5 ml/kg body weight, 1:10 dilution in mineral oil, Sigma, France), twice a week for 4 weeks (Vα19 TCR transgenic, n = 9; WT littermates n = 10 obtained from two independent experiments (exp 1, n = 5 WT, n = 4 Tg; exp 2, n = 5 WT, n = 5 Tg); MR1−/−, n = 5; WT littermates n = 6), or bile duct ligation and section (Vα19 TCR transgenic, n = 9; WT littermates n = 3), as we previously described47,48. Animals were sacrificed 24 h after the last CCl4 injection or 12 days after surgery in BDL mice. Experiments were performed in accordance with protocols approved by the Paris-Nord ethical committee C2EA 121 (authorization number 02529.02).
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