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Most malignancies displayed weak to moderate cytoplasmic and nuclear positivity. Colorectal and ovarian cancers showed cases with strong staining. Malignant carcinoids, lung, skin, stomach and renal cancers were weakly stained or negative.
Malignant tissues generally exhibited weak to moderate nuclear immunoreactivity. Strong staining was observed in malignant gliomas. Several lung and renal cancers were negative.