human anti-bst2 antibody, method for its production and use, polynucleotide, vector, hybridoma and therapeutic agent The present invention relates to anti-bst2 antibodies that have been selected using, as an indicator, the binding between antibst2 antibodies and various variants. with sp / icing of human bst2 antigen. As a result, the present inventors have successfully obtained anti-bst2 antibodies that specifically recognize bst2d, which has been reported to be expressed at high levels in cancer cells. antibodies of the present invention specifically bind to cells expressing bst2d. Nonspecific antibody binding to non-target tissues, which results in decreased antibody concentration in the blood, can be prevented by using the antibodies of the present invention therapeutically. alternatively, the present invention provides diagnostic agents comprising an antibody of the present invention which specifically detects tissues expressing bst2d.
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