Figure 5. Annual cycle of Dromiciops gliroides showing
its physiological, tissue, and biochemical changes during torpor and
activity periods. Particular cellular alterations involve oxidative
homeostasis by increasing molecular and enzymatic scavengers in torpor
to inactivate reactive oxygen species generated during the activity
period. The stages of the cycle were modified from Muñoz-Pedreros et al.
(2005), according to a field experiment (Nespolo, Fontúrbel, et al.,
2021).