Neuroaminidase (NRH, EC3.2.1.18) is a common term for acetylneuraminidase hydrolase (sialidase). This enzyme catalyzes the hydrolysis of glycoproteins and oligosaccharides α 2-3 α 2-6 and α N-acetylneuraminic acid residues connected by 2-8 bonds. Our company's neuraminidase is a gene recombinant product with high purity and good activity, free from animal derived viruses. Biochemical research: The concentration of sialic acid (SA) in the blood has been regarded as an important indicator for monitoring the presence and development of malignant tumors, and has been widely used in the diagnosis and monitoring of various tumors (such as lung cancer, gastric cancer, colorectal cancer, liver cancer, ovarian cancer, etc.). Enzymatic detection of sialic acid has the advantages of speed, simplicity, high sensitivity, and ease of automation. NRH is a very important enzyme in the sialic acid enzyme detection kit, and as the first step enzyme in initiating the entire chemical reaction of the kit, it has a very important role and significance.