An Ocular Commensal Protects against Corneal Infection by Driving an Interleukin-17 Response from Mucosal γδ T Cells

Although the eye is a mucosal site, there has been a long-standing controversy regarding whether a resident microbiome exists on the ocular surface. St. Leger et al. show that a microorganism that lives on the conjunctiva tunes local mucosal immunity and protects the eye from pathogenic infection.

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