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Glucose rate of appearance (Ra) before and after an oral glucose tolerance test (OGTT) for young (solid line, n = 15) and older (dashed line, n = 13) subjects. Values are means ± SE. #Significantly different from baseline (P ≤ 0.05), *significantly different from older individuals (P ≤ 0.05), ^trended to be different from baseline (P ≤ 0.10), +trended to be different from older individuals (P ≤ 0.10). Glucose Ra is suppressed in aging during an OGTT.
