Colloidal gold, also known as the gold sol (gold solution), refers to the diameter of the dispersed phase particles between l-150nm gold sol, belonging multiphase heterogeneous system, the color was orange-red to purple. Colloidal gold can be used as markers for immunohistochemistry, the past 10 years has developed into a colloidal gold labeled an important immune markers. Colloidal gold immunoassay in drug detection, and many other areas of biomedical research has been developed, and more and more relevant research fields attention.
Colloidal gold is a commonly used marker technology is based on colloidal gold marker used as a tracer of a novel antigen-antibody immune labeling technique has its unique advantages. In recent years, studies have been widely used in various biological. In clinical use almost all immunoblotting using its mark. While the stream type, electron microscopy, immunohistochemistry, molecular biology as well as cases biochip may be used.
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