CYP27B1 and hepatocellular carcinoma: The expression and cellular distribution of CP2 family (CP2a, CP2b, and CP2c), CP2c, and YY1 proteins in normal human liver (n = 16), adjacent noncancerous (n = 48) and HCC (n = 136) tissue samples were analyzed by immunohistochemistry (IHC) and quantified by TissueFAXS system (TissueGnostics, Vienna, Austria) (see Materials and Methods).