The present invention is directed to antibodies comprising novel antigen binding domains that bind to somatostatin receptor 2 (SSTR2) and heterodimeric antibodies. [Selection] Figures 1A-1E本発明は、ソマトスタチン受容体2(SSTR2)に結合する、新規の抗原結合ドメインを含む抗体、およびヘテロ二量体抗体を対象とする。【選択図】図1A-1E