Detection of HSP70. A, B, The expression of HSP70 gene detected by RT-PCR is shown. C, D, The production of HSP70 protein detected by Westem blotting is shown. P, positive control. N, nagetive control. SG WG G S C N, group name. The mean difference is significant compared with group G and C at the 0.05 level. The mean difference is significant compared with group S at the 0.05 level.