Hepatic GSH and HSP70 levels
Hepatic GSH levels in stressed fish at 17.5 and 48 h post-stress had significantly increased compared with those in control fish (Fig. 3A). The changing patterns of hepatic GSH levels in stressed fish were similar to those in the plasma of stressed fish (Figs. 2B and 3A).
Hepatic HSP70 expression levels are shown in Fig. 3B. Hepatic HSP70 expression levels gradually increased after heat shock treatment and reached their maximum values at 17.5 h post-stress.