Fig. 4
The actors’ attitudes toward the mice after witnessing the aggression in TPPT. (a) Definition of ICR and BL6 zones in the rat compartment in the TPPT apparatus; the former was adjacent to the ICR compartment, and the latter the BL6 compartment. Values are in millimeters. The ICR and BL6 zones were switched for each experiment. (b) The partition between the rat and mice compartments with holes. (c, d) The actor rats could sniff the mice through the holes drilled the partition set between the rat and the mice compartments by inserting their nose tips. Arrowheads denote the sniffing nose tip through the holes. (e) Sniffing frequency by actors toward ICR or BL6 mice was counted. (f, g) Paired t analysis on the sniffing frequency by EAH (f) and CNT (g) rats toward attacker ICR or victim BL6 mice. (h) Correlation between sniffing frequency and number of contacts with ICR mice by EAH rats. (i) Duration stayed in either ICR or BL6 zones. (j, k) Analysis on the duration by EAH (f) and CNT (g) rats in the ICR or BL6 zones with paired t-test. (l) n = 16; except for the data in h and i (n = 15). (e, i) A two-way ANOVA and Tukey’s post hoc test; (f, g, j, k) paired two-tailed t-test; (h, l) Pearson correlation coefficient and two-tailed Student's t-distribution.
