Four in five, they found, were contaminated with microcystin, which attacks the liver and kidneys.

他们发现，五分之四的人被微囊藻毒素感染，而微囊藻毒素会攻击肝脏和肾脏。

A high enough dose of microcystin could cause liver or kidney failure, says David Farrer, a public health toxicologist with the Oregon Health Authority.

高剂量的微囊藻毒素会导致肝肾功能衰竭，俄勒冈州卫生局的公共卫生毒理学家大卫·法瑞尔说道。