MANGANESE INDUCED HAEMATOLOGICAL AND HISTOPATHOLOGICAL CHANGES IN OREOCHROMIS MOSSAMBICUS(PETERS, 1852)S. BIJOY NANDAN, C.M. SUMITHA AND B. GIRISH KUMARAbstract The study shows serious structural changes in the fish exposed to higher sublethal concentration of manganese sulfate. Heavy metal toxicity leads to degenerative and necrotic changes in the renal tubules with focal areas of necrosis and aggregation of inflammatory cells.
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