Figure 4.

ATP-gated P2X₇R may function as an M cell-targeting receptor. Whole-mount PP specimens excised from mice 10 min after oral administration of EGFP-LL37 (green) were stained with anti-P2X₇R (red), NKM 16-2-4 (purple), and WGA (blue). Merged images of whole mount specimens were created using slices from z-stacks projected onto one slice along the x-axis. Scale bars represent 20 µm. Data shown are representative of three independent experiments.