Immunohistochemical analysis of liver tissue section labeling PCNA with Anti-PCNA antibody ab18197 at 1/250. Antigen retrieval was performed with antigen retrieval buffer, ab64236. A and B, PCNA staining in right and left grafts 1 day after reperfusion. E and F, PCNA staining in right and left grafts 5 day after reperfusion.