Figure 1.

Levels of ROS and antioxidant capacity in the thoracic aorta and serum of ground squirrels. (A) MDA content in the thoracic aorta, n = 3. (B) H₂O₂ content in the thoracic aorta, n = 5. (C) TAC in the thoracic aorta, n = 5. (D) SOD content in serum, n = 6. Samples are SA: summer active, LT: late torpor, and IBA: interbout arousal. Data are mean ± SEM. Significant differences between SA samples are denoted as follows: ** p < 0.01, whereas significant differences in IBA as compared with LT are denoted by # p < 0.05 or ## p < 0.01.