Results of [2-<sup>13</sup>C]glucose breath tests.

<p>(A) Changes in expired <sup>13</sup>CO<sub>2</sub> levels after the oral administration of 100 mg/kg of [2-<sup>13</sup>C]glucose in OLETF rats at 6–12 weeks, 15–18 weeks, and 21–24 weeks of age. (B) Changes in expired <sup>13</sup>CO<sub>2</sub> levels after the oral administration of 100 mg/kg of [2-<sup>13</sup>C]glucose in LETO rats at 6–12 weeks, 15–18 weeks, and 21–24 weeks of age. Data are represented as mean ± SD.</p>