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Rotavirus. A nucleic acid test (NAT) is a technique used to detect a particular nucleic acid sequence and thus usually to detect and identify a particular species or subspecies of organism, often a virus or bacterium that acts as a pathogen in blood, tissue, urine, etc. NATs differ from other tests in that they detect genetic materials (RNA or DNA) rather than antigens or antibodies.
HCV genome. Nonstructural protein 5B (NS5B) is a viral protein found in the hepatitis C virus (HCV). [1] It is an RNA-dependent RNA polymerase, having the key function of replicating HCV's viral RNA by using the viral positive RNA strand as a template to catalyze the polymerization of ribonucleoside triphosphates (rNTP) during RNA replication.
There are several diagnostic tests for hepatitis C, including HCV antibody enzyme immunoassay (ELISA), recombinant immunoblot assay, and quantitative HCV RNA polymerase chain reaction (PCR). [16] HCV RNA can be detected by PCR typically one to two weeks after infection. In contrast, antibodies can take substantially longer to form and thus be ...
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It is also possible that NS5A is a critical component during HCV replication and subcellular localization, which may shed light on the poorly understood HCV life cycle. [ 1 ] [ 4 ] Additionally, NS5A has been shown to modulate the polymerase activity of NS5B , an RNA-dependent RNA polymerase (RdRp) . [ 3 ]
Laboratory Corporation of America Holdings (Labcorp), headquartered in Burlington, North Carolina, provides laboratory services used for diagnosis and healthcare decisions. [1] It operates one of the largest clinical laboratory networks in the world and has operations in over 100 countries; although its operations are primarily in the U.S. [ 1 ]
Labcorp on Wednesday began marketing to U.S. physicians the first test for a trio of blood biomarkers it says can detect the hallmarks of Alzheimer's, accelerating diagnosis of the brain-wasting ...
Nucleic acid sequence-based amplification, commonly referred to as NASBA, is a method in molecular biology which is used to produce multiple copies of single stranded RNA. [1] NASBA is a two-step process that takes RNA and anneals specially designed primers, then utilizes an enzyme cocktail to amplify it.