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. 2005 Jul 11;113(12):1675–1682. doi: 10.1289/ehp.8072

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Mean plasma concentrations (± SE) of T (A), KT (B), and Vtg (C) and individual Vtg concentrations (D) in male and immature female white sturgeon from four locations on the Columbia River. Each bar represents a sample size of 19–24 (A–C). Means with different letters or numbers indicate a significant difference between locations or between sexes within a location, respectively (ANOVA, p < 0.05).