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Figure 4


Fig. 4. (A) Plasma glycerol concentration, (B) glycerol specific activity, and (C) rate of appearance of glycerol (Ra glycerol) in adult ruff sandpipers before (22°C) and during cold exposure (5°C). Units for specific activity are disintegrations per min (d.p.m.) per micromole (d.p.m. µmol–1). Sample sizes for all panels are indicated in parentheses in A. *Differences from thermoneutral values (P<0.05).