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. Author manuscript; available in PMC: 2014 Jul 29.
Published in final edited form as: Horm Behav. 2011 Apr 30;60(1):128–138. doi: 10.1016/j.yhbeh.2011.04.002

Fig. 2.

Fig. 2

Plasma corticosterone concentrations of breeding, nonbreeding and virgin male California mice in phase 1 and phase 2. A: Baseline CORT concentrations; B: CORT concentrations immediately following exposure to predator urine. CORT levels were significantly higher after predator-urine exposure than under baseline conditions (P<0.001). A group×phase×basal_test interaction (P=0.031) revealed that the change in CORT responses to stress from test 1 to test 2 differed among groups. Virgin males tended to increase their CORT response to stress from phase 1 to phase 2 (P=0.075), whereas breeding and nonbreeding males did not. Note difference between graphs in y-axis scale.