Fig. 2From: Mechanisms underlying antidepressant effect of transcutaneous auricular vagus nerve stimulation on CUMS model rats based on hippocampal α7nAchR/NF-κB signal pathwayExperimental procedure. Embedding cannulae at 1 day; make samples on the last day. − 21 days, 0 day and 25 days involved three behavioral testing of SPT, OFT and FSTBack to article page