Fig. 2

Expression of claudin proteins in human nasopharyngeal carcinoma and non-neoplastic mucosae. Semiquantitative immunoblotting was used to estimate statistical differences in the expression of claudin proteins in 12 human nasopharyngeal carcinoma tissues and non-neoplastic mucosae. The semiquantitative measurements are expressed as the mean standard deviation and as percent changes from an internal reference sample. a) claudin-2 expression; b) claudin-5 expression; c) claudin-8 expression; d) claudin-9 expression; e) Histograms. *P < 0.05 and **P < 0.01 compared with non-neoplastic mucosae