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Bioconcentration factor (BCF; mean ± standard error) of atrazine (A) and alachlor (B) in juvenile Southern leopard frogs (Lithobates sphenocephala) after exposure to individual or mixed agrochemicals and following a 1-h depuration period. Z = atrazine; L = alachlor; N = urea. Capital letters above bars represent statistically significant differences among treatments.
