Fig. 3.

Bacteroides induces the expression of MHC and co-stimulatory molecules by APCs more effectively than Lactobacillus. Thy1.2⁻ cells were isolated from MLN cells of germ-free Balb/c mice by using MACS. These cells (2.5 × 10⁶ cells) were stimulated with LA or BA (50 μg/ml) for 24 h. The surface phenotype (MHC II (I-A^d), CD80, CD86) of the cells was analyzed by flow cytometry. Data shown are representative of 4 independent experiments