A gamma-globulin factor in the serum of patients with systemic lupus erythematosus that reacts with isolated cell nuclei 1 or nucleoprotein 2,3 has been detected in many ways. 4 The standard method of ...

THE latex-fixation test of Singer and Plotz 1 was designed as a diagnostic tool for the detection of rheumatoid arthritis. The positive reaction in this test depends upon the interaction of human ...