
Fig. 3. Changes in monoamine, adenosine and GABA levels in the brain of hibernating
lizard A. stellio stellio. Values are means ± S.E.M.,
N=10 determinations on separate preparations from different animals.
Asterisks indicate values that are significantly different from the control
values. 5-HT, serotonin; DA, dopamine; 5-HIAA, 5-hydroxyindole-3-acetic
acetic; NE, norepinephrine; E, epinephrine.