FIGURE 2.

Chronic stress induces an increase in corticosterone and norepinephrine in both C57BL6/J and BALB/c nude mice. (A), Schematic illustration of the experiment design. (B), Serum NE concentrations from the control and stressed groups in C57BL6/J mice; n = 12 control, n = 10 stress, unpaired t test. (C), Serum CORT concentrations in control and stressed C57BL6/J mice; n = 7 control, n = 7 stress; Mann‐Whitney test. (D), Serum NE concentrations from control and stressed groups in BALB/c nude mice; n = 7 control, n = 6 stress; unpaired t test. (E), Serum CORT concentrations in control and stressed BALB/c nude mice; n = 7 control, n = 7 stress, Mann‐Whitney test. *P < .05, **P < .01, ***P < .001