Exendin-4 enhances GLP-1 signaling and reduces anxiety-like behaviors in male heroin withdrawal mice. - Xiang, Yang; Yan, Xiaowei; Li, Rongrong; Li, Chunlu; Yin, Dan; Luo, Cancan; Xiong, Yingqi; Hong, Yan; Li, Yixin; Xia, Baijuan (PLoS ONE, 2026)