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Mean (± standard deviation) Se:Hg molar ratio in various tissues of 6 Steller sea lion (Eumetopias jubatus) pups (light grey). Se:Hg molar ratios for the case study (dark grey represents tissues above 1 for the pup with the highest [THg]; tissues in black are below 1 for the pup with the highest [THg]) and are included in the mean.
