Figure 8 Immunohistochemistry (IHC) on serial sections for green fluorescent protein (GFP) (A) (C) (E) and for CK‐18 (B) (D) (F) one month after infusion of GFP negative bone marrow derived cells (BMSC) into GFP positive transgenic rats (group H). Animals were subjected to hepatic ischaemia/reperfusion (I/R) injury before cell infusion. Several GFP negative (arrows), CK‐18 positive hepatocytes are visible within the liver parenchyma, suggesting differentiation from GFP negative BMDCs into hepatocyte‐like cells rather than cell fusion between BMDCs and host hepatocytes. (Original magnification: (A), (B) ×20; (C), (D), (E), (F) ×40.)