Figure 2
(A) Negative staining for BRAF monoclonal antibody in colonic tubular adenoma (×200). (B) Diffuse cytoplasmic staining for BRAF monoclonal antibody in well-differentiated colon adenocarcinoma (×200). (C) Diffuse cytoplasmic staining for BRAF monoclonal antibody in tumor cells of signet ring carcinoma of the colon (×200), and (D) diffuse cytoplasmic staining in the floating malignant epithelial cells of colonic mucinous carcinoma (×200).
Immunohistochemical (IHC) staining of colon carcinoma specimens for BRAF

(A) Negative staining for BRAF monoclonal antibody in colonic tubular adenoma (×200). (B) Diffuse cytoplasmic staining for BRAF monoclonal antibody in well-differentiated colon adenocarcinoma (×200). (C) Diffuse cytoplasmic staining for BRAF monoclonal antibody in tumor cells of signet ring carcinoma of the colon (×200), and (D) diffuse cytoplasmic staining in the floating malignant epithelial cells of colonic mucinous carcinoma (×200).

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