Table 1.

Surface phenotype of human limbal and corneal epithelia.

	Corneal epithelia		Limbal epithelia
Markers	Basal	Suprabasal	Basal	Suprabasala
CD38	−b	−	−	+++c
CD157	−	−	+++	+/−d
p63	+/−	−	++e	+f
CK19	−	−	++	+/−
CK3/12	++	++	−	+
Cx43	++	+	−	+

^aEvaluation based on immunofluorescent staining and empirical score.

^b−, undetectable.

^c+++, strongly positive.

^d+−, staining of the molecule found undetectable (−) or weakly positive (+) in different donors.

^e++, moderately positive.

^f+, weakly positive.