dedifferentiate
verb [ I ] biology specialized uk/ˌdiː.dɪf.əˈren.ʃi.eɪt/ us/diːˌdɪf.əˈren.ʃi.eɪt/
（细胞）去分化
if cells dedifferentiate, they return to an earlier stage of development in order to grow again
These tumors are unique because some of them dedifferentiate into benign tumors. 这些肿瘤十分独特，因为其中一些可以去分化成为良性肿瘤。