Applied Biosystems TaqMan predesigned assays contain everything you need: TaqMan probe and PCR primer sets formulated to work right out of the box. No additional design, optimization, or melt curve analysis needed. Cited in more than 40K publications to date, TaqMan Assays deliver the specificity, sensitivity, and reproducibility your research deserves—not to mention they’re backed by our TaqMan Assay performance guarantee. You can also order your assay with special off-catalog manufacturing modifications using our Specialty service or leverage Thermo Fisher’s manufacturing infrastructure with our GMP oligos optionsor OEM and contract manufacturing services.
With TaqMan Assays, gold standard performance is always guaranteed
Applied Biosystems TaqMan Assays have long been considered the gold standard in quantitative genomic and proteomic analysis, providing high specificity, reproducibility, sensitivity, and unsurpassed content. We have invested years of research and verification to offer you the industry’s largest portfolio of application-specific, predesigned assays ready to work right out of the box. TaqMan Assays are developed using a robust probe/primer design pipeline ensuring that every assay delivers results you can trust.
Real time PCR (quantitative PCR, qPCR) is now a well-established method for the detection, quantification, and typing of different microbial agents in the areas of clinical and veterinary diagnostics and food safety. Although the concept of PCR is relatively simple, there are specific issues in qPCR that developers and users of this technology must bear in mind. These include the use of correct terminology and definitions, understanding of the principle of PCR, difficulties with interpretation and presentation of data, the limitations of qPCR in different areas of microbial diagnostics and parameters important for the description of qPCR performance. It is not our intention in this review to describe every single aspect of qPCR design, optimization, and validation; however, it is our hope that this basic guide will help to orient beginners and users of qPCR in the use of this powerful technique.
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Introduction
The phrase “Polymerase chain reaction” (PCR) was first used more than 30 years ago in a paper describing a novel enzymatic amplification of DNA (Saiki et al., 1985). The first applications of PCR were rather unpractical due to the usage of thermolabile Klenow fragment for amplification, which needed to be added to the reaction after each denaturation step. The crucial innovation which enabled routine usage of PCR was utilization of thermostable polymerase from Thermus aquaticus (Saiki et al., 1988). This improvement, together with the availability of PCR cyclers and chemical components, led to the worldwide recognition of PCR as the tool of choice for the specific enzymatic amplification of DNA in vitro. It must be noted that the general concept of PCR, which includes primers, DNA polymerase, nucleotides, specific ions, and DNA template, and consisting of cycles that comprise steps of DNA denaturation, primer annealing, and extension, have not been changed since 1985. The invention of PCR has greatly boosted research in various areas of biology and this technology has significantly contributed to the current level of human knowledge in many spheres of research.
985). The first applications of PCR were rather unpractical due to the usage of thermolabile Klenow fragment for amplification, which needed to be added to the reaction after each denaturation step. The crucial innovation which enabled routine usage of PCR was utilization of thermostable polymerase from Thermus aquaticus (Saiki et al., 1988). This improvement, together with the availability of PCR cyclers and chemical components, led to the worldwide recognition of PCR as the tool of choice for the specific enzymatic amplification of DNA in vitro. It must be noted that the general concept of PCR, which includes primers, DNA polymerase, nucleotides, specific ions, and DNA template, and consisting of cycles that comprise steps of DNA denaturation, primer annealing, and extension, have not been changed since 1985. The invention of PCR has greatly boosted research in various areas of biology and this technology has significantly contributed to the current level of human knowledge in many spheres of research.
