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Immunohistochemical staining of differentially expressed proteins in UPS. A. Tumor cells showing cytoplasmic immunoreactivity for CD68. × 200. B. Tumor cells showing no immunoreactivity for S-100. × 200. C. Tumor cells showing no immunoreactivity for melan A. × 200. D. Tumor cells showing no immunoreactivity for HMB-45. × 200.
