Gut dysbiosis was inevitable, but tolerance was not: temporal responses of the murine microbiota that maintain its capacity for butyrate production correlate with sustained antinociception to chronic morphine. - Sall I; Foxall R; Felth L; Maret S; Rosa Z; Gaur A; Calawa J; Pavlik N; Whistler JL; Whistler CA (Gut microbes, 2025)