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[Toxicity of microcystin and its bioaccumulation effect].

Microcystins are cyclic heptapeptide hepatotoxins from certain cyanobacteria. It can inhibit hepatic protein phosphatase 1 and 2A activities, break the balance between protein phosphorylation and phosphorylysis, causing liver damage even necrocytosis. Furthermore, it is a strong tumor promoter. Yet, its hazard received little study. This paper presents a latest review of toxicity and bioaccumulation of Microcystins.