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Social interaction test of C57BL/6 substrains. (A–D) Regular scale analysis. (E–H) Large-scale analysis. (A,E) Total distance traveled. (B,F) Number of contacts. (C,G) Total duration of contacts. (D,H) Mean duration per contacts. *p < 0.05, **p < 0.01, ***p < 0.0001. Error bars indicate SEM.
