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Final average body weight (mg) of X. laevis tadpoles (3 days posthatching) following a 3-day exposure to Aroclor 1254. Data are presented in all figures as mean (n = 4) ± standard deviation (error bars) of the mean. Columns sharing at least one common superscript letter (a or b) are not significantly different, whereas the other differ at p < 0.05. CTL, control.
