Table 2.

Frequency and prevalence percentage of histological alteration of Ctenopharyngodon idella exposed under acute and chronic toxicity of cadmium.

Organ	Histological alterations	Frequency (n = 30)	Prevalence (%)
Liver	Nuclear alteration	22	73
	Hepatic necrosis	26	87
	Hyperplasia	25	83
	Hemorrhage	28	93
	Hepatic infiltration	23	77
	Dilated sinusoids	27	90
	Cognation of central vein	20	67
	Pyknotic nuclei	22	73
	Proliferation of hepatic cells	19	63
	Edema	23	77
	Pigmented cell rupture	21	70
	Fat cell accumulation	24	80
	Hypertrophy	25	83
	Alarm cells	19	63
	Partial degeneration of hepatic mass	20	67
	Vacuole degeneration	25	83