title: Letter: Polymorphonuclear cells form E rosettes.
mesh_terms: D000361:Agammaglobulinemia / Q000276:immunology; D002498:Centrifugation; D004804:Eosinophils / Q000276:immunology; D006801:Humans; D007104:Immune Adherence Reaction; D008214:Lymphocytes / Q000276:immunology; D008722:Methods; D009504:Neutrophils / Q000276:immunology; D013194:Staining and Labeling