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(A) pMARK immunoreactivity in angiosarcoma of the scalp and face and hemangioma. Angiosarcoma lesions exhibited significantly higher pMAPK immunoreactivity than hemangioma (χ2 = 6.35, P = .012, P < .05). (B) Representative images of immunohistochemical staining of pMAPK in (a) angiosarcoma and (b) hemangioma tissues (SP, ×100). pMAPK = phosphorylated mitogen activated kinase-like protein.
