| abstract |
(57) Abstract: A malignant tumor diagnostic agent containing a labeled oligopeptide, and a compound in which an anti-neoplastic drug and an oligopeptide are directly or via a cross-linking group are used as an active ingredient. An antineoplastic agent. According to the present invention, a malignant tumor can be accurately diagnosed, In addition, since it selectively acts on malignant tumor cells, it is possible to provide an anti-malignant tumor agent having few side effects. |