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Immunohistochemical analyses of HNSCC FFPE sections. TNC (A, B, C, and D) and PTHrP (E, F, G, and H) IHC staining on NR cases (A, C, E, and G) and CR cases (B, D, F, and H). Both TNC and PTHrP antibodies gave strong cytoplasmic positive staining in NR cases, whereas CR cases showed no substantial reactivity with these antibodies. Magnification, ×400.
