Table 2.

Results of the semiquantitative expression analysis of relevant epithelial cell markers in control human native corneas (CTR-C), control human native scleral limbi (CTR-L), and human artificial corneas (HAC) using immunohistochemistry and immunofluorescence. PCK, human cytokeratin cocktail pancytokeratin; AE1/AE3, human cytokeratin cocktail AE1/AE3; KRT5, cytokeratin 5; CRYλ, crystallin λ; CRYαa, crystallin alpha a; CX43, connexin 43; TJP1, tight junction protein 1; KRT3, cytokeratin 3; KRT19, cytokeratin 19; KRT15, cytokeratin 15; ΔNp63, limbal isoform of the protein p63. The staining signal was assessed as negative ( −), slightly positive (+ / −), positive ( +), very positive (+ +), or strongly positive (+ + +)

	CTR-C	CTR-L	HAC
PCK	+ +	+ +	+ + +
AE1/AE3	+ + +	+ + +	+ + +
KTR5	+ + +	+ + +	+ +
CRYλ	+ + +	+ + +	+ +
CRYαa	+ + +	+ +	+ + +
CX43	+ +	+ +	+ +
TJP1	+ +	+ +	+ +
KRT3	+ + +	+	+ / −
KRT19	+	+ +	+ +
KRT15	-	+ +	+ +
ΔNp63	+	+ +	+ +