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Fig. 1. Plasma glycerol levels in rainbow smelt subjected to a controlled decrease
in temperature during three separate experiments: (A) March 2002; (B) December
2002; (C) March 2003. Days following the temperature transition are shown in
parentheses. Values are means ± s.e.m. In March 2002 and December 2002
experiments N=6 at each temperature with the exception of December
2002, 0.5°C where N=12. In the March 2003 experiment
N=12 for all points except temperatures of 1.5°C where
N=10 and 0°C where N=11. Different letters indicate
significant differences between two temperatures.