PROBLEM TO BE SOLVED: To provide a new therapeutic agent for a malignant tumor.SOLUTION: The therapeutic agent for a malignant tumor contains a T1-type ribonuclease derived from an oyster mushroom.COPYRIGHT: (C)2012,JPO&INPIT【課題】新たな抗悪性腫瘍剤の提供。【解決手段】ヒラタケ由来のT1タイプリボヌクレアーゼを含有する悪性腫瘍治療薬。【選択図】なし