This was mor obvious in the anaphase and telophase, especially in the former phase laggard chromosomes,chromosome bridges,acentric fragments and polypolar distrbution could be seen frequently.

• 后期主要表现为部分染色体滞后、染色体桥和断片的出现以及染色体不均等的多极分布。末期的主要变化是细胞质的分裂受阻而形成多核体(多核细胞)。