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Formalin-fixed and paraffin-embedded human breast cancer tissue (A, 4 μm), human stomach adenocarcinoma (B, 4 μm), and human colon adenocarcinoma (C, 4 μm), stained with anti-Cytokeratin 8 antibody (DB 098) shows strong positive cytoplasmic immunostaining of neoplastic cells (A), strong positive cytoplasmic immunostaining of tumor cells (B, C).

Formalin-fixed and paraffin-embedded human squamous skin carcinoma (A, 4 μm), and human breast tissue (B, 4 μm), stained with anti-Cytokeratin 17 antibody (DB 101) shows strong positive cytoplasmic immunostaining of tumor cells (A), and strong positive cytoplasmic immunostaining of myoepithelial cells in hyperplastic duct (B).

Formalin-fixed and paraffin-embedded human squamous cell skin carcinoma tissue (4 μm) stained with anti-Cytokeratin 16 antibody (DB 100) shows strong positive cytoplasmic immunostaining of neoplastic cells.

Formalin-fixed and paraffin-embedded human liver tissue (A, 4 μm), and skin tissue with neuroendokrine carcinoma of skin – Merkel cell carcinoma (B, 4 μm), stained with anti-Cytokeratin 18 antibody (DB 102) shows strong positive cytoplasmic immunostaining of the bile duct epithelial cells and week to moderate stains of liver cells (A), strong positive cytoplasmic and dot-like immunostaining of neoplastic cells.

Formalin-fixed and paraffin-embedded human skin squamous cell carcinoma (A, μm), prostate hyperplasia (B, μm), and human tonsil tissue (C, μm) stained with anti-Cytokeratin 14 antibody (DB 099) shows strong positive cytoplasmic immunostaining of the neoplastic cells (A), strong positive cytoplasmic immunostaining in the basal cells of the normal and benign glands (B), and positive cytoplasmic immunostaining of the squamous epithelial cells (C).