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The linear relationships between δ13Calanine values in RBCs (gray circles, solid line) and hair (white circles, dotted line) and SSB intake, n = 30. Axis labels are also shown back-transformed (in parentheses) as servings/d. 1 serving SSB = 237 mL. SSB, sugar-sweetened beverage; δ13C, carbon isotope ratio; δ13Calanine, alanine carbon isotope ratio.
