Alterations in the Gill Filaments and Secondary Lamellae of Cirrhinus mrigala Exposed to “Nuvan,” an Organophosphorus Insecticide

Table 1

Thickness of the epithelium, density, and area of mucous goblet cells covering different regions of the gills in Cirrhinus mrigala kept in control.

Regions	Thickness (m)	Mucous goblet cells
		Density (number/mm^2)	Area; (m^2)
Gill filaments	14.79 ± 5.29	1600 ± 160	14.94 ± 3.09
Secondary lamellae	3.15 ± 0.87	320 ± 80	13.10 ± 1.35

Values = mean ± SD; = 3 fishes.