Pcr Preparation
Pcr Preparation - Related Videos
08:51
Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR (RS-PCR)
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Cited by 9 •
2016
Here, ribosomal spacer PCR (RS-PCR) is used together with a miniaturized electrophoresis system as a fast and high resolution method for genotyping S. aureus at moderate costs allowing a high throughput.
03:41
Agarose Gel Electrophoresis of DNA Amplicons Post PCR: A Method to Analyze Products of Multiplex PCR and Evaluate PCR Reaction Success
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2025
In this video, we demonstrate the separation of bacterial PCR-amplified DNA using agarose gel electrophoresis. Agarose gel functions as a molecular sieve, enabling the negatively-charged DNA to migrate based upon their size under an applied electric field.
13:27
PCR: The Polymerase Chain Reaction
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2023
The polymerase chain reaction, or PCR, is a technique used to amplify DNA through thermocycling – cyles of temperature changes at fixed time intervals. Using a thermostable DNA polymerase, PCR can create numerous copies of DNA from DNA building blocks called dNTPs. There are three steps in PCR: denaturation, annealing, and elongation. Denaturation is the first step in the cycle and causes the DNA to melt by disrupting hydrogen bonds between the bases resulting in single-stranded DNA. Annealing...
02:07
PCR
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2026
The polymerase chain reaction, or PCR, is a widely used technique for copying segments of DNA. Due to exponential amplification, PCR can produce millions or billions of DNA copies within just a few hours. In a PCR reaction, a heat-resistant DNA polymerase enzyme amplifies the original DNA through a series of temperature changes inside an automated machine called a thermocycler.PCR is a Versatile Method that Revolutionized Molecular BiologyKary Mullis developed PCR in 1983, for which he was...
06:01
Optimized PCR-based Detection of Mycoplasma
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Cited by 14 •
2011
The LookOut Mycoplasma PCR Detection Kit utilizes the polymerase chain reaction (PCR), which is established as the method of choice for highest sensitivity in the detection of Mycoplasma, Acholeplasma, and Ureaplasma contamination in cell cultures and other cell culture derived biologicals.
FAQs
Primers determine which DNA region can be amplified because they are designed to match sequences associated with the selected target. Their inclusion connects the reaction to the intended region rather than to DNA broadly. During preparation, accurate primer selection and measurement therefore support specific amplification, which is important for genotyping, pathogen detection, cloning, and sequencing workflows.
Template DNA supplies the sequence being examined, while primers identify the target region. Nucleotides provide the molecular materials needed to make copies, DNA polymerase supports the copying reaction, and buffer establishes the reaction conditions in which these components work together. Preparing all components in appropriate amounts allows the cycling process to generate the intended product.
Small preparation errors can alter the balance among template DNA, primers, nucleotides, polymerase, and buffer, affecting amplification performance. Thorough mixing helps distribute the reagents throughout the reaction, whereas contamination control reduces the chance that unintended DNA will be amplified. These practices are central to obtaining results that are specific and reproducible across reactions.
A practical workflow begins by identifying the target and gathering the required template, primers, nucleotides, DNA polymerase, and buffer. Each reagent is measured carefully, combined into the reaction, and mixed thoroughly while limiting contamination. The prepared mixture can then undergo the programmed denaturation, primer annealing, and extension cycles needed to amplify the selected sequence.
PCR preparation is useful whenever a selected DNA sequence must be amplified for further analysis or use. The overview identifies applications including genotyping, pathogen detection, cloning, and sequencing. These uses differ in purpose, but each depends on producing sufficient copies of a defined region so that the sequence can be examined, compared, or incorporated into a subsequent workflow.
For gene-expression studies, PCR can be paired with reverse transcription. In that workflow, reverse transcription provides a DNA form from expression-related material, after which PCR preparation supports amplification of the selected sequence. This combination extends PCR beyond direct analysis of template DNA and allows researchers to investigate gene expression using amplification-based methods.
A suitable preparation should support amplification that is specific to the selected target and reproducible between reactions. Those qualities matter because amplified material may be used for genotyping, pathogen detection, cloning, sequencing, or expression analysis. Careful reagent measurement, complete mixing, and contamination control improve confidence that the resulting product represents the intended sequence rather than an unintended contaminant.