Antimicrobial Peptide pBD2 Alleviates Intestinal Damage by Regulating MAPK and Nrf2 Signaling Pathway and Intestinal Microbiota in Mice Challenged with Enterotoxigenic Escherichia Coli K88 - Mingke Gu; Zhilong Du; Guixin Zhu; Shaoqiang Lian; Xiaoyang Shen; Kun Zhang; Hanfang Cai; Kejun Wang; Chunli Li (Probiotics and Antimicrobial Proteins, 2026)