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Immunohistochemical staining for NF-κB in thyroid tissue. A. In SO group, immunoreactivity of NF-κB was mainly shown in cytoplasts; B. In SAP group, intense immunoreactivity of NF-κB was shown in nucleus; C. Lower immunoreactivity of NF-κB was shown in nucleus; D. WOR-CON group. (original magnification ×400).
