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A: Schematic of social preference-avoidance test in tree shrews. Social interaction (SI) behaviors were assessed in the compartment. Test arena (SI zone and non-SI zone) and target (novel tree shrew) zone were blocked by perforated Plexiglas partition. Shadow indicates SI zone. B: Heatmaps show cumulative duration spent by wild-type tree shrews throughout compartment during social preference-avoidance test.
