title: Seronegative rheumatoid nodulosis: a new case report.
authors.forename: Yue-Ping
authors.initials: YP
authors.lastname: Zeng
authors.forename: Tao
authors.initials: T
authors.lastname: Qu
mesh_terms: D001168:Arthritis / Q000276:immunology* / Q000473:pathology; D005260:Female; D006801:Humans; D007155:Immunologic Factors / Q000276:immunology; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000276:immunology; D012218:Rheumatoid Nodule / Q000276:immunology* / Q000473:pathology; D012867:Skin / Q000276:immunology / Q000473:pathology
chemical_list: D007155:Immunologic Factors; D012217:Rheumatoid Factor