Cytokeratin 20 is a general marker of cutaneous Merkel cells while certain neuronal proteins are absent.

Abstract

Merkel cells are difficult to identify in tissue sections. Previous studies have used cytokeratins (CK) 8, 18, and 19 as histologic markers of Merkel cells. However, these CKs are also expressed in some outer root sheath keratinocytes and some early fetal epidermal cells and thus are not truly specific of Merkel cells in general. Using selective antibodies… (More)

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