Figure 2

PTK6 expression in the LSCC tissues by immunohistochemistry analysis. A. PTK6 protein expression was higher in the normal laryngeal epithelial tissues than in LSCC tissues (original magnification: A, x 100); B and C were higher magnification of part of A, B. PTK6 immunohistochemical staining in paracarcinoma laryngeal epithelial tissues (original magnification: x 400) C. PTK6 immunohistochemical staining in the LSCC epithelial tissues (original magnification:, x 400) ; D and E. PTK6 immunohistochemical staining in the well differentiated LSCC epithelial tissues (original magnification: D, x 100; E, x 400); F and G. PTK6 immunohistochemical staining in the mediate differentiated LSCC epithelial tissues (original magnification: F, x100; G, x 400); H and I. PTK6 immunohistochemical staining in the poor differentiated LSCC epithelial tissues (original magnification: H, x 100; I, x 400).