Breast Tumor Antigen (CA 15-3)

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Breast Tumor Antigen (CA 15-3)

A high molecular weight mucin-like glycoprotein, (identified as MUC-1) of 300–450 kD localized in the alveoli and ducts of the mammary glands. Distinct epitopes have been identified by monoclonal antibodies DF3 and 115D8.