JEB -- Wang et al. 204 (20): 3553 Figure IG5

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Fig. 5. Relationship between the heart rate of fasting, undisturbed and resting snakes and the cholinergic tone (filled circles) and the adrenergic tone (open squares) in Boa constrictor. The lines are linear regressions (cholinergic tone, r²=0.663, P=0.01; adrenergic tone, r²<0.01, P=0.94).