Figure 3: Comparison of the effects of warming and propranolol to inhibit interscapular BAT in mice. (a) BAT FDG uptake ratio under warm intervention. Warming could significantly decrease BAT metabolism in mice with or without cold pre-exposure ( and , resp.). (b) BAT FDG uptake ratio under propranolol intervention. Propranolol could significantly decrease BAT activity in cold pre-exposure mice ().