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Normal tissues showed weak to moderate cytoplasmic staining. Squamous epithelium of esophagus, intestinal tract, exocrine pancreas, fallopian tube, neuronal cells of cerebral cortex and the germinal center cells of tonsil showed strong positivity. Also neuronal cells showed moderate nucleolar positivity. Bile duct cells, islets of Langerhans, pneumocytes, parathyroid, glial cells, smooth muscle, myocytes and the non-germinal center cells were negative.