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Fig. 2. Means (±2 S.E.M.) for (A) glycogen
(expressed as glucosyl units), (B) free glucose and (C) lactate in brains of
hatchling painted turtles. Values were adjusted by ANCOVA to the mean mass of
37 mg for the 61 brains examined in this study. ANCOVA for brain glycogen,
F5,54=71.23, P<0.001; for free glucose,
F5,54=25.53, P<0.001; for lactate,
F5,54=31.97, P<0.001. Treatment 0 represents
controls that were not exposed to subzero temperatures; treatment 1 represents
animals exposed to 6°C for 10 days; treatment 2 represents animals
exposed to 6°C for 20 days; treatment 3 represents animals exposed
first to 6°C for 10 days and then to 3°C for another 10
days; treatment 4 represents animals exposed first to 6°C for 10
days and then to 0°C for another 10 days; treatment 5 represents animals
exposed first to 6°C for 10 days and then to +3°C for another
10 days. Bars that share the same letter cannot be distinguished statistically
at P=0.05.