title: Properdin-mediated immune ring formation associated with Pseudomonas keratitis.
mesh_terms: D000328:Adult; D003167:Complement Activation; D003170:Complement Pathway, Alternative; D006801:Humans; D007634:Keratitis / Q000209:etiology / Q000276:immunology* / Q000473:pathology; D008297:Male; D011552:Pseudomonas Infections