CUS-induced anxious behaviors. Mice were subjected to CUS or not, and stressed animals were administered vehicle, Bay 60-7550 (0.75, 1.5 and 3 mg/kg), or diazepam (1.5 mg/kg). A) % open arm entries in the elevated plus maze test (EPM). B) % time spent in open arms in the elevated plus maze test (EPM). C) Numbers of marbles buried in the marble burying test (MBT). Values are means ± S.E.M. with 10 mice in each group. *p<0.05, **p<0.01 and ***p<0.001 vs. non-stressed control group. #p<0.05, ##p<0.01 and ###p<0.001 vs. vehicle-treated CUS group.