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. Author manuscript; available in PMC: 2011 Jun 16.
Published in final edited form as: J Comp Physiol B. 2009 Dec 5;180(4):599–617. doi: 10.1007/s00360-009-0422-9

Fig. 1.

Fig. 1

Body temperature (Tb) of a 13-lined ground squirrel for several weeks in late fall and into the first three months of winter heterothermy, i.e. hibernation; SA, summer active; FT, fall transition; ET, early torpor.