Table 1.

Expression of predominant claudins in human intestine

	small intestine	large intestine	Ref.
Claudin-1	++	++	30,51,116,115
Claudin-2	++	+	23,30,51,116
Claudin-3	+	++	23,30,51,116
Claudin-4	+	++	23,30,51,116,115
Claudin-5		++	30,116
Claudin-7	+	++	23,30,51
Claudin-8	+	++	23,30
Claudin-12	++	++	23
Claudin-15	++	+	23

+ mild expression; ++ strong expression.