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Fig. 2. Time course of changes in manganese superoxide dismutase (MnSOD) activity
in skeletal muscle of untreated, L-arginine-treated and
L-NAME-treated rats during early and late acclimation to cold
(4±1°C). *P<0.05,
**P<0.01, ***P<0.001 compared
with the control maintained at room temperature (22±1°C).
#P<0.05, ###P<0.001 compared
with the untreated group at the same time of cold acclimation.