Fig. 1

General conditions of mice. a The Animal Thermotropism Behavior Surveillance was consisted of automatic temperature controlling unit, remote monitoring unit, and data processing unit; b the left was normal mice and the right was model mice; c bodyweight of mice before and after induced by cyclophosphamide in five groups; d spleen and thymus indexes of mice in five groups; e changes in the temperature tropism of mice on cold/hot plates; f–h effect of Maca on the cAMP/cGMP ratio in serum. * represented P < 0.05 compared with the normal group; ** represented P < 0.01 compared with the normal group; *** represented P < 0.001 compared with the normal group; # represented P < 0.05 compared with the model group; ## represented P < 0.01 compared with the model group; ### represented P < 0.001 compared with the model group