The stem cell niche of human livers: Symmetry between development and regeneration
Lili Zhang, Neil Theise, Michael Chua, Lola M. Reid – 28 October 2008 – Human livers contain two pluripotent progenitors: hepatic stem cells and hepatoblasts. The hepatic stem cells uniquely express the combination of epithelial cell adhesion molecule (EpCAM), neural cell adhesion molecule (NCAM), cytokeratin (CK) 19, albumin ±, and are negative for α‐fetoprotein (AFP). They are precursors to hepatoblasts, which differ from hepatic stem cells in size, morphology, and in expressing the combination of EpCAM, intercellular cell adhesion molecule (ICAM‐1), CK19, albumin++, and AFP++.