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Acute test of daphnids in the presence of styrene and PS particle dispersions. (A) Mobility of daphnids incubated in the presence of styrene after 48 h. (B) Mobility of daphnids incubated in the presence of PS particle dispersions after 96 h. * indicates P ≤ 0.05 (Dunn’s test); Error bars show mean + SE.
