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1. Targeting angiogenin, therefore, may find a potential therapeutic approach in human malignant melanoma.
   因此以血管生成素为靶点可能会找到治疗黑色素瘤的新方法。
2. Angiogenin was isolated as a tumor angiogenic factor based solely on its angiogenic activity.
   血管生成素基于其促血管发生活性，最早作为肿瘤血管生成因子被分离出来。