Fig. 2.

Oral glucose tolerance test. Young (n = 8) and middle-aged (n = 6) rats were submitted to an oral glucose load as described in “Material and methods.” As can be seen, middle-aged rats showed a worsening of glucose tolerance. This is seen in the small figure depicted on the upper right corner, which is a bar graph of the incremental area under the curves. Student’s “t” test, unpaired and parametric was used to analyze results. *p < 0.05 (in AUC values)