Abstract
In this work, we evaluated blocking properties of various reagents used in dot immunoassay test systems on nitrocellulose membranes employing carbon-based diagnosticum to determine antibodies to tetanus anatoxin, thermostable toxin of Yersinia pseudotuberculosis, and HIV-I. The results support the usage of a nonionic detergent Tween 20 which efficiently inhibited nonspecific protein binding to the solid-phase reagent surface and did not decrease sensitivity of the analysis.
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