Effects of Mus microinjection to the BLA on social defeat stress. a Diagram of experimental flow. b Representative images of the moving track during social interaction. c Freezing time of intruder mice during a 5-min open-field test at day 3 after treatment. d Time spent in the social interaction zone at day 3 after treatment, compared with saline injection. e Sucrose reference at day 3 after treatment. f Marble burying test at day 3 after treatment. Independent student t test was used, *p < 0.05, **p < 0.01 compared with the saline-group, n = 8