特别的细胞
如：1.a specialized cell or group of nerve endings that responds to sensory stimuli
感受器,对感官刺激有反应的一种特别的细胞或一组神经末梢
2.Regression of a specialized cell or tissue to a simpler, more embryonic, unspecialized form. Dedifferentiation may occur before the regeneration of appendages in plants and certain animals and in the development of some cancers.
去分化,反分化指高度分化的细胞或组织向更简单,更初期非特化的形式的退化.去分化发生在植物和某些动物的附器的再生之前,或一些癌症出现的时候