Deletion of α-neurexin II results in autism-related behaviors in mice.

However, Nrxn2α KO mice spent significantly more time in the peripheral zone near the walls ( Figure 2b ), significantly less time in an intermediate zone ( Figure 2c ) and showed a trend approaching significance ( P =0.085) for less time in the center of the arena ( Figure 2d ), but there were no genotypic differences in the total number of zone entries ( Supplementary Figures S2a and c ).

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