Figure 3

Accumulation of Cu in muscles (A) and hepatopancreas (B) of C. dauricus after sub-chronic exposure to various concentrations of Cu. Note: The bars are the respective standard errors (n = 4). Values with small letters represent significant differences with respect to Cu concentration within a day (P < 0.05); Values with big letters represent significant differences with respect to day within a concentration (P < 0.05).