Oval cells (PHx plus AAF), a measurable % of them appeared to derive from bone marrow precursors. When these oval cells had been isolated and transplanted into a second generation of rats, they gave rise to karyotypically typical FCGR2A/CD32a Proteins Accession hepatocytes carrying the original DPP IV marker (Oh et al., 2007). In a different study, bone marrow from GFP+ rats was engrafted into GFP- rats. With time immediately after engraftment, GFP+ hepatocytes started to emerge within the liver in the recipient animals. It was estimated that the amount of emerging hepatocytes was at the rate of 5,000 each day (Tomiyama et al., 2007). The authors characterized this as a reasonably smaller contribution. The significance of the this study