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Immunohistochemical staining of NY-ESO-1 (antibody E978): a) Negative control of parotid gland tissue. b) positive control staining of testicular tissue. c) negative staining of tumor tissue. d) weakly positive staining of tumor tissue with tubular growth pattern. e) moderately strong staining of ACC with solid growth pattern. f) strong expression of NY-ESO-1 in 50% of tumor tissue, stroma tissue is negative.
