Figure 5

Representative in vivo CT images of the fifth lumbar vertebra in each group. (A) Bipedal mouse (n = 20), (B) bipedal mouse with melatonin treatment (n = 18), (C) quadrupedal mouse (n = 20) and (D) quadrupedal mouse with melatonin treatment (n = 19). The cancellous bone from bipedal mouse (A) and quadrupedal mouse (C) without melatonin treatmentshowed rod-like trabeculae with disconnected irregular surfaces, while cancellous bone frombipedal mouse and quadrupedal mousetreated with melatonin (B,D) had plate-like trabeculae that were markedly increased, thickened and interconnected.