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Effect of diet on number of licks (A) and duration per facial contact (B) in C57 males when water is the reward. When water was used as a reward, we no longer observed a significant diet effect. There was a significant effect of temperature on the number of licks and on the duration per facial contact. Sample sizes were as follows: for testing at 37 and 46°C, n = 16 on RD and n = 23 on HFD. For testing at 52°C, n = 8 on RD and n = 15 on HFD.
