A complement blood test measures how well complement proteins in your blood support immune defense. The complement system helps antibodies fight germs and clear foreign substances. Complement testing ...

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 diagnostic evaluation of patients suspected of having either tuberculosis or a systemic fungous infection should now include among other things such immunologic procedures as skin testing and ...