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The first well-documented methylmercury (MeHg) poisoning by consumption of fish arose in Minamata, Japan in 1953. MeHg had dispersed from Minamata to the Shiranui Sea. The temporal changes in MeHg in the umbilical cords indicate that residents living around that Sea had been exposed to low-dose MeHg through fish consumption for about 20 years (at least from 1950 to 1968). They have complained of paresthesia...
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