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Neurexin-1α KO mice exhibit increased grooming behavior. Mice were habituated in an empty cage without bedding, and grooming of all body regions was monitored for 10 min. (A) Mean time spent self-grooming. (B) Mean number of grooming bouts. (C) Mean time spent per grooming bout. Data shown are means ± SEMs (*, P < 0.05; ns compared with WT; for a full description of statistical tests and results, see SI Appendix).
