Fig. 3.

Number of squares with scent marks of male C57 mice. On day 1, they were placed into the test chamber with a wire mesh partition, on the opposite side of which a towel block without odor (CONTROL), or with cat fur/skin odor (TEST ODOR) was placed. A third group was exposed to cat odor in their home cage prior to the test (HOMECAGE ODOR). Twenty-four hours (D2) and 7 days later (D8), they were replaced into the identical chamber and confronted with a towel block without cat odor. On day 9 they were placed into a differently shaped (triangular) chamber with a towel block without cat odor on the opposite side of a wire mesh partition. Data are expressed as mean ± S.E.M. Significant post hoc differences between groups compared to CONTROL; *p<.05