Polymerase chain reaction (PCR) is a nucleic acid amplification method that enzymatically generates large quantities of a specific DNA fragment from minimal starting material through iterative thermal cycling. The technique relies on sequence-specific oligonucleotide primers, a thermostable DNA polymerase, deoxynucleoside triphosphates, and defined cycling parameters comprising denaturation, primer annealing, and extension steps. PCR enables exponential amplification of target sequences with high sensitivity and specificity, supporting downstream applications such as cloning, sequencing, mutational analysis, quantitative nucleic acid measurements, and detection of low-abundance or degraded genetic material in research, diagnostics, forensics, and environmental monitoring.
Researchers have developed a rapid color-changing test that can distinguish between different strains of golden staph, including those likely to be virulent and antibiotic resistant. Golden staph is a major human pathogen ...
Bio & Medicine
Apr 15, 2026
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Many biological functions are regulated by the switching on and off of mechanisms triggered by the matching of a keyhole (receptor) formed by a protein's three-dimensional structure and a molecule (ligand) that fits perfectly ...
Bio & Medicine
Mar 1, 2026
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From vaccines and diagnostics to emerging gene-based therapies, RNA molecules are now central to modern medicine. But as their use continues to grow, so does a fundamental challenge: producing RNA quickly, accurately and ...
Biotechnology
Feb 10, 2026
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"Adapt or perish, now as ever, is nature's inexorable imperative," wrote H. G. Wells. This principle—that survival requires change—was mastered billions of years ago by single-celled organisms living in extreme heat. Over ...
Evolution
Nov 29, 2025
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Food quality and safety are crucial. However, conventional food-monitoring methods, including ribotyping and polymerase chain reaction, tend to be destructive and lengthy. These shortcomings limit their potential for broad ...
Nanomaterials
Nov 26, 2025
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A new method to detect ribonucleic acid (RNA) without needing any complex lab procedures or heating equipment has been developed by researchers at UConn Health.
Biotechnology
Oct 16, 2025
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Scientists from the University of Illinois Urbana-Champaign have developed a method to isolate genes from amounts of microbial DNA so tiny that it would take 20,000 samples to weigh as much as a single grain of sugar.
Cell & Microbiology
Sep 10, 2025
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The first rapid test for mpox, more commonly known as monkeypox, has been developed by a team of researchers led by Penn State. The selective molecular sensor can detect the virus within minutes, without the use of any high-end ...
Bio & Medicine
Apr 18, 2023
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PCR technology is a molecular diagnostics technology that detects target nucleic acids by amplifying the DNA amount. It has brought marked progress in the life sciences field since its development in 1984.
Bio & Medicine
Feb 22, 2023
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For more than 30 years, polymerase chain reaction (PCR) has been the gold standard in molecular diagnostic testing, detecting genetic material, such as those from a virus or from human DNA. But PCR, including reverse transcription ...
Bio & Medicine
Jul 25, 2022
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