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Fig. 5 | BMC Veterinary Research

Fig. 5

From: Oxidative stress, gene expression and histopathology of cultured gilthead sea bream (Sparus aurata) naturally co-infected with Ergasilus sieboldi and Vibrio alginolyticus

Fig. 5

Photomicrograph representing histological sections from the gills of, (a) normal gills of uninfected control fish showing normal lamellar epithelium, with no evidence of proliferative or inflammatory reaction, (b to f) infested gilthead sea beam showing congestion of the venous sinuses and blood vessels associated with marked expansion of the primary gill lamellae with edematous fluid and inflammatory mononuclear cell infiltration (b), congestion of the blood vessels with intense infiltration of the primary and secondary gill lamellae with mononuclear cells in addition to accumulation faint bluish of mucous exudate (c), focal epithelial proliferation with focal epithelial fusion (d), Mucous cell hyperplasia (e), and hyperplasia of respiratory epithelium with complete fusion of secondary gill lamellae. The proliferating cells appeared large with round vesicular basophilic nuclei (f). (Stain: H and E; Scale bar: 100 μm)

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BMC Veterinary Research

ISSN: 1746-6148

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