Mercury.
D004781:Environmental Exposure; D006197:Hair / Q000032:analysis; D006801:Humans; D008628:Mercury / Q000032:analysis* / Q000097:blood / Q000652:urine; D008722:Methods; D008767:Methylmercury Compounds / Q000032:analysis; D014835:Volatilization
D008767:Methylmercury Compounds; D008628:Mercury