title: [Detection of rheumatoid factor in direct immunofluorescence on circulating leukocytes in "sero-negative" rheumatoid disease].
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis*; D005455:Fluorescent Antibody Technique; D006801:Humans; D007962:Leukocytes / Q000276:immunology*; D012217:Rheumatoid Factor / Q000032:analysis*
chemical_list: D012217:Rheumatoid Factor
vernacular_title: Ricerca del fattore reumatoide in immunofluorescenza diretta sui leucociti circolanti nella malattia reumatoide "siero-negativa"