Fig. 4

Time spent in each of the side chambers during the test for social novelty preference. None of the mutant mouse lines had significant preference for spending more time in the side with the more-novel stranger 2, versus the already-investigated stranger 1. Data shown are mean + SEM for each group for a 10-min test. WT = wild-type, cKO = conditional knockout. * p < 0.05, within-group comparison between stranger 1 side and stranger 2 side