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Representative hematoxylin/eosine and SPARC immunostaining on a prognostic oral squamous cell carcinoma (OSCC) TMA. (a, b) E/E (20x–40x); (c, d) high SPARC cytoplasmatic expression (20x–40x); (e, f) low SPARC cytoplasmatic expression (20x–40x); (g, h) negative SPARC tumoral expression in OSCC and strong SPARC immunostaining in stromal tissue (20x–40x).
