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Effects of DEHP treatments on the relative expression of different heat-shock genes in C. riparius fourth instar larvae: hsc70 (A-C), hsp70 (D-H), hsp40 (I-K), and hsp27 (L-N). Each bar is the mean ± SE obtained from three independent experiments, each with three replicates. Values are expressed as fold changes with respect to the control. X-axis values range from 10−3 to 1 μg/L. *Significant differences (p ≤ 0.05) as compared to control cultures.
