fish Carassius auratus exposed to roxithromycin
To investigate the distribution, bioconcentration, metabolism, and biomarker responses of macrolide
antibiotic roxithromycin (ROX) in fish, crucian carp (Carassius auratus) were exposed to various concen-
trations of ROX (4, 20, and 100
l
g L
À1
) for 20 d