Results showed: (1) CBT cell death in low tempratures is accompanied by characteristic changes, such as, reduced cell size, distorted nucleus,chromatin condensation and margination and cell (cytoplasmic) vacuolization;

• 结果表明：(1)CBT在低温协迫下，细胞圆缩，细胞核变形，染色质浓缩且边位，细胞质空泡状； 细胞死亡率随处理时间的增加而增加；