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Table 1

Semiquantitative scoring of gill and liver tissue lesions of Danio rerio exposed to different concentrations (34, 85, and 170 μg/L) of triclosan.

Tissue Lesion Control 34 μg/L 85 μg/L 170 μg/L
Gill Aneurysm +++ +++ +++
Capillary dilation + + ++
Lamellar disorganization +++ +++ +++
Hyperplasia +++ +++ +++
Epithelial lifting ++ +++ +++
Desquamation +++ +++ +++
Liver Sinusoidal dilation ++ +++ +++
Congestion +++ +++ +++
Vacuolization ++ +++ +++
Hepatocellular degeneration + ++ +++
Necrosis ± + +++

Note: Histopathological lesions were scored semiquantitatively according to their severity: (−) None, (±) mild, (+) moderate, (++) severe, and (+++) very severe.

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