AQP5 and hepatocellular carcinoma: Compared with the adjacent nonneoplastic tissues, the immunohistochemistry scores of AQP3 (mean ± S.D.: 5.61 ± 0.23 versus 2.18 ± 0.09, P < 0.001) and AQP5 (mean ± S.D.: 6.28 ± 0.36 versus 2.16 ± 0.05, P < 0.001) proteins were both significantly increased in HCC tissues.