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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Bioessays. 2014 Jul 25;36(9):884–891. doi: 10.1002/bies.201400066

Figure 1.

Figure 1

Mice at lower ambient temperatures require increased rates of metabolism and thermogenesis. The normal core body temperature of mice is approximately 37°C (green line), as for most mammals. Mice housed at their thermoneutral temperature (~30°C, TT, red dashed line) are able to meet this temperature using only their basal metabolic rate (BMR) for heat production (red arrow). Mice housed under standard temperature conditions (~22°C, ST, red dashed line) cannot rely solely on their BMR, and thus a number of adaptive thermogenic pathways are turned on to maintain normal body temperature (yellow arrow).