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=== Protective functions ===
The foreskin provides physical protection to the glans penis and inner mucosa, protecting the mucosal tissue from pathogens, pollutants, friction, injury, and drying out. The foreskin protects the glans penis and meatus of infant boys from abrasion and irritation from ammoniacal diapers.<ref name="gairdner1949">{{REFjournal
|last=Gairdner
|first=D.