We have previously reported that 2.0-mm circular incisions of the corneal epithelium induce the generation of CS cells that express the CD11c surface marker.20 (link) Corneas of BALB/c mice were trephined as described previously, and CD11c+ spleen cells were isolated 4 days later using a Miltenyl Biotec (Santa Barbara, CA) pan dendritic cell (DC) isolation kit.20 (link) The CD11c+ cells from trephined mice and untreated mice were used for detecting regulatory cell activity in vitro.20 (link)