Primary hepatocytes were fixed in 4% paraformaldehyde and made into smear. Immunofluorescence was performed as previous described [9 (link)]. Albumin antibody (1:100, Santa Cruz Biotechnology, Santa Cruz, CA, USA), CD31 antibody (1:50, Santa Cruz Biotechnology, Santa Cruz, CA, USA), Laminin antibody (1:100, Abcam, Cambridge, UK), and Nestin antibody (1:50, Chemicon, Billerica, MA, USA) were used. FITC-conjugated donkey anti-goat antibody or Cy3-conjugated goat anti-rabbit antibody was used as secondary antibodies (1:100, Jackson Immuno-Research, West Grove, PA). At last, nuclei were stained with DAPI.
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