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 antigen most commonly used in complement fixation tests for Johne's disease is a suspension of the specific organism, Mycobacterium johnei. This form of antigen is not entirely satisfactory for ...
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