Microcystin-LR disrupts gut metabolic homeostasis through microbiota–metabolite axis remodeling in grass carp - Lixin Ma; Junyuan Tan; Xiaomin Zheng; Zhuojin He; Zhendong Qin; Li Lin; Fei Shi (Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2026)