in the present study , it is demonstrated by a high resolution agarose gel electrophoresis , combined with immunofixation , that nine patients with primary sjogren 's syndrome have mixed monoclonal ( igm kappa ) cryoglobulins , in contrast to those observed in five patients with secondary sjogren 's syndrome ( sjogren 's syndrome and rheumatoid arthritis ) , 13 patients with rheumatoid arthritis and six patients with systemic lupus erythematosus , which were mixed polyclonal .
C0151450
secondary sjogren 's syndrome
C1527336
sjogren 's syndrome