BACKGROUND Analysis of the functional activity of neutrophils is of great importance in the differential diagnosis of patients with recurrent bacterial infections. It has long been established that stimulated polymorphonuclear leukocytes reduce nitroblue tetrazolium. Application of a simple and reliable nitroblue tetrazolium method that clearly differentiates the chronic granulomatous disease p...

Five tests investigating different aspects of the nonspecific defense mechanisms including capillary tube random migration, particle ingestion activity, quantitative and histochemical nitroblue tetrazolium dye reduction by polymorphonuclear neutrophils, and serum lysozyme concentrations were performed in 46 patients with Hodgkin's disease. The anomalies observed in the active stage of the disea...

Creatine kinase isoenzymes are separated electrophoretically on cellulose acetate, with use of an improved procedure for reactivation and visualization of enzymic activity. N-Acetyl cysteine is used as the reactivator and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide for visualization in a tetrazolium-coupled system. This test, both practical and reliable, is a suitable alter...