Table 1.

Type I and II α-keratin expression in humans

Tissue	Type I α-keratins	Type II α-keratins
Simple epithelium	KRT10*	KRT8
	KRT18
	KRT19*
	KRT20
Stratified epithelium	KRT10*	KRT1
	KRT13	KRT2
	KRT14*	KRT5*
	KRT15*	KRT6A
	KRT16*	KRT6B
	KRT17*
Corneal epithelium	KRT12
Epithelium (nonspecific)	KRT23	KRT79
	KRT24	KRT80
	KRT42
Hair	KRT14*	KRT5*
	KRT15*	KRT72
	KRT16*	KRT73
	KRT17*	KRT74
	KRT19*	KRT75
	KRT28	KRT82
	KRT31	KRT84
	KRT35	KRT85
	KRT36

Table recreated from Schweizer et al. [45] and Moll et al. [46]. Gene names in bold text have been lost in birds.

*Indicates genes that are expressed in two of the tissues listed in the table.