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Insulin tolerance test (ITT) (A), glucose tolerance test (GTT) (B), and area under the curve (AUC) (C) in normal (N), growth hormone receptor knockout (GHRKO), Ames dwarf (df/df), and double-mutant (df/KO) mice. Values are means ± SEM. a, b, c—values that do not share the same letter in the superscript are statistically different (*p < .05).
