Liver single cells were isolated by two-step collagenase digestion and gradient centrifugation. To capture CD133+ progenitor cells, the cells were labeled with primary CD133 antibody (mouse IgG1, Miltenyi Biotec) and subsequently magnetically isolated using the EasySep PE Selection Kit (Stemcell Technologies) according to the manufacturer’s instructions. A total of 5 × 105 CD133+ HPCs were injected into the spleen of each Fah−/− mouse as previously described (27 (link)).