Table 3.

Immunohistochemical staining intensity of claudins in different tumor cell types

Tumors	Type of tumor cells	Claudin-1	Claudin-4	Claudin-7
AM (43)	Ameloblast-like cells	0/+	0	0/+
	Stellate reticulum-like cells	+	0	0/+
	Squamous cells	+++	+++	++
	Granular cells	++	++	+++
AOT (17)	Spindle epithelial cells	+++	0/+	++
	Ductal-like structures	0	0	++
	Whorled masses	0	0	0/+
AF (6)	Columnar epithelium	++	0	++
	Stellate reticulum-like cells	+++	0	++
	Dental papilla-like stroma	0	0	0
AC (3)	Ameloblast-like cells	0	0	0/+
	Stellate reticulum-like cells	0	0	+
	Squamous cells	+	+	+