| 单词 | 退行发育 |
| 释义 | 〔anaplastic〕Of or characterized by cells that have become less differentiated.退行发育术的：细胞退回到未变异状态的或有其特征的〔anaplasia〕Reversion of cells to an immature or a less differentiated form, as occurs in most malignant tumors.退行发育：细胞退化到不成熟或未变异的状态，如多数恶性肿瘤 |
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