the volume density of mitochondria,rough endoplasmic reticulum and ribosome tended upwards obviously,and the volume density of smooth endoplasmic reticulum,Golgi complex and lysosome tended upwards to various degrees,too.

• 细胞质内线粒体、粗面内质网、核糖体的体密度呈明显上升趋势，而滑面内质网、高尔基复合体及溶酶体的体密度均有不同程度的上升。