FFAR2 and breast cancer: Consistent with the results observed in the acetate-treated Abx mice, BC colonization in Abx WT mice, but not Gpr43−/− mice, caused significant augmentation of mitochondrial mass and intracellular expression of Glut-1 in pulmonary CD8+ T cells at 8 dpi, whereas LR colonization failed to do so in either mouse lines (Figure 5(f)).