Weight of UCP1 KO Mice Compared with Their WT Littermates at Time of Experiments
| Measurement | WT body weight (g) | UCP1 KO body weight (g) | P |
| Indirect calorimetry | 25.3 ± 0.5 (n = 3) | 29.3 ± 0.3 (n = 4) | 0.0006 |
| Rectal measurement | 23.8 ± 0.3 (n = 4) | 27.3 ± 0.6 (n = 5) | 0.0023 |
| Thermal imaging | 25.3 ± 0.5 (n = 4) | 28.3 ± 0.3 (n = 4) | 0.0014 |
| PET/MRI (saline) | 20.6 ± 0.2 (n = 4) | 24.3 ± 0.8 (n = 4) | 0.0014 |
| PET/MRI (CL 316, 243) | 20.3 ± 0.8 (n = 5) | 24.5 ± 0.4 (n = 5) | 0.0015 |
Values are mean ± SEM. P values were obtained from unpaired 2-tailed t tests.