Table 1.

Examples of connexin and pannexin expression profile in the integumentary system

Tissue	Cell type	Connexin expression	Pannexin expression	Reference
Epidermis	Keratinocyte	Cx43, Cx45, Cx40, Cx31, Cx31.1, Cx30, Cx30.3 and Cx26	Panx1, Panx3	a[4, 10, 25, 34–36] b[29, 46, 48]
	Melanocyte	Cx43	Panx1	a,b[51]
	Langerhans cell	–	ND
Dermis	Fibroblast	Cx43, Cx45, Cx40		a[39] b[35, 48]
Hypodermis	Fibroblast	Cx43	Panx1	b[35, 48]
Sebaceous gland		Cx43, Cx26, Cx30	Panx1, Panx3	a[54] b[46]
Eccrine sweat gland		Cx43, Cx26, Cx30	Panx1, Panx3	a,b[46, 54]
Hair follicle		Cx26, Cx43	Panx1, Panx3	a[35, 46, 64–67, 72, 73] b[46]
Nail bed		Cx43, Cx30	ND	a[77–79]
Chicken feather follicle	Keratinocyte and follicle cell	Cx32, Cx31, [Chicken 31sim], [Chicken31]	ND	a[81, 82] b [83]
Zebrafish	Keratinocyte	Cx43, Cx30.3	ND	a[88, 89]
Skin pigmentation	Xanthophore Melanophore Iridophore	Cx41.8, Cx39.3	ND	a[94–97]

See text and references for details

^aDenotes references to connexins

^bDenotes references to pannexins