Immunofluorescent staining shows the colocalization and expression of α-CGRP with infused ILC2s. Representative α-CGRP (red), CFSE/GFP-tag (green, CFSE for Calca-KO ILC2s, GFP-tag for WT ILC2s), DAPI (blue), and merged images were captured with confocal fluorescent microscopy. Scale bars, 20 µm.