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Immunolocalization of amyloid precursor protein (APP) in human breast carcinoma. (a, b) APP immunoreactivity was detected in the cytoplasm of carcinoma cells (a), while negative in the morphologically normal mammary grand or stroma (b). (c) Positive control of APP immunostaining (human cerebral tissue from a patient with Alzheimer's disease). Bar = 100 μm, respectively.
