Natural antibiotic found on human skin.

Reports on a study investigating the production of a natural antibiotic by human skin that protects it against bacterial infection. The identification of a small protein, called human beta-defensin-2, that kills bacteria such as Escherichia coli, Pseudomonas aeruginosa, and Candida albicans; The observation of patients with psoriasis; The antibiotic as closely resembling one found on the tongues and throats of cattle.