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Fig. 4. The cumulative absorption (inset plots) and apparent rates of absorption of
[3H]3OMD-glucose and
[14C]L-glucose as a function of time since gavage of the
probes to house sparrows. (A) Measurements made under relatively nonsaturating
conditions (200 mmol l-1 mannitol in the gavage solution,
N=7 birds); (B) measurements made under more saturating conditions
(i.e. 200 mmol l-1 3OMD-glucose replaced mannitol in the
gavage solution, N=6). Filled symbols and solid lines,
[14C]L-glucose; unfilled symbols and dashed lines,
[3H]3OMD-glucose. The absorption of
3OMD-glucose was slightly but significantly higher than that of
L-glucose. The asterisk in A designates the significantly higher
apparent absorption rate of [3H]3OMD-glucose
(P=0.015) than of [14C]L-glucose at the 15 min
sampling point.
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