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Early disease detection through quantum dots

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Michael A. Greenwood

Detecting diseases such as cancer in their initial stages can mean the difference between life and death. A system that provides such warning can give treatments — the identical methods that might be ineffective only months or even weeks later — a chance to work. One field of study being explored by researchers focuses on protein-based recognition of various types of cancers and other medical conditions. Although approaches already exist to do this type of molecular profiling — including gel electrophoresis, Western blot and protein microarrays — these methods are too costly,...Read full article

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    Published: May 2008
    Glossary
    quantum dots
    A quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties arise from the confinement of electrons within the dot, leading to discrete energy levels, or "quantization" of energy, similar to the behavior of individual atoms or molecules. Quantum dots have a size on the order of a few nanometers and can emit or absorb photons (light) with precise wavelengths,...
    Biophotonicsgel electrophoresisNews & Featuresprotein microarraysquantum dots

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