Cumulative concentration response curve of U46619 (A), acetylcholine (ACh) (B), and sodium nitroprusside (SNP) (C). Values are displayed as mean ± S.D (n = 9 −10) mice. Statistical analysis was done using two-way ANOVA followed by Tukey post-test *p < 0.05 vs. IH-FMT-PRO, #p < 0.05 vs. RA-FMT, $p < 0.05 vs. RA-FMT-PRO. FMT: fecal matter transplantation, IH: intermittent hypoxia, PRO: probiotic, RA: room air, VEH: vehicle