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. 2012 Aug 10;120(12):1658–1670. doi: 10.1289/ehp.1104579

Figure 1.

Figure 1

Arsenic exposure and metabolism in the human body: from source to urine (modified from Navas-Acien et al. 2009a). aArsenic species measured in NHANES (Caldwell et al. 2009). Two other organic forms of arsenic considered to be minor contributors to arsenic in seafood were also measured in NHANES but were detected only in a small number of urine samples: arsenocholine (1.8%) and trimethylarsine oxide (0.3%). The predominant urinary metabolite of arsenocholine in rats, mice, and rabbits is arsenobetaine (Marafante et al. 1984).