Abstract: Selecting of proper cryoprotectant agents is a principle step of cryopreservation, for these agents play an important role in freezing cells.

• 摘要：低温保护剂在细胞的低温保存过程当中起着很重要的作用，选择合适的低温保护剂是低温保存过程中首要解决的问题。