β5t is expressed in some thymic DCs. Neonatal thymic sections were immunostained for β5t and markers for DCs: (A) NC, (B) CD11c, (C) CD209, and (D) CD303. NC was stained with normal rabbit serum and biotinylated mouse IgG1. The lower half of each panel shows a magnified image of the cortical area. Bar represents 50 μM.