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. 2012 Aug 28;2(8):e155. doi: 10.1038/tp.2012.83

Figure 2.

Figure 2

Social behavior characterization of juvenile wild-type (WT) and knockout pups (μ-KO) mice. (a) WT mice significantly prefer the chamber of the apparatus characterized by the presence of a same sex/age partner, contrary to μ-KO mice that did not discriminate between the two end chambers. Sociability index: 100 × time in social chamber/(time in social chamber + time in non-social chamber). Sample size: KO-♀=10, KO-♂=10, WT-♀=13, WT-♂=12. (b) WT mice significantly preferred the social-cued chambers of a place preference apparatus, after a 10-day period of conditioning, contrary to KO mice showing no preference between compartments. Conditioned Social Place Preference protocol (CSPP) index=100 × time social-cued chamber/(time social-cued chamber + time-isolated cued chamber). Sample sizes: KO-♀=13, KO-♂=13, WT-♀=12, WT-♂=12. **P<0.01.