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 ...

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NORMAL guinea pig serum is the most common source of complement for the complement-fixation test, and may be used fresh or, more commonly, preserved either by freeze-drying or by Richardson's method 1 ...