Histamine H1 receptors in dentate gyrus-projecting cholinergic neurons of the medial septum suppress contextual fear retrieval in mice oleh Li Cheng, Ling Xiao, Wenkai Lin, Minzhu Li, Jiaying Liu, Xiaoyun Qiu, Menghan Li, Yanrong Zheng, Cenglin Xu, Yi Wang, Zhong Chen