Nail Isthmus: A Distinct Region of the Nail Apparatus

Figure 6

(a) K1 was positively stained in the suprabasal layers of the nail isthmus (arrow) (original magnification ×40). (b) K10 was expressed in the suprabasal layers of the nail isthmus (arrow) (original magnification ×40). (c) K14 was shown in the whole layers of the nail bed (dotted arrow) and nail isthmus (arrow) (original magnification ×40). (d) K16 was slightly detected in the suprabasal layers of the nail bed (dotted arrow) and nail isthmus (arrow) (original magnification ×40). (e) K17 was considerably expressed in the suprabasal layers of the nail bed (dotted arrow) and nail isthmus (arrow) (original magnification ×40). (f) Filaggrin was identified in the granular layer of the nail isthmus (arrow) (original magnification ×40).

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