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Technology
A physical mapping approach that uses fluorescent tags to detect hybridization of probes within metaphase chromosomes or less condensed somatic interphase chromatin. This technique can be used for identification of chromosomal abnormalities and for gene mapping.
Technology
A technique in which samples that either contain fluorescent compounds or are stained with fluorescent dyes are exposed to a wavelength of light that excites the fluorophore, allowing for an image to be captured by a microscope.
Technology
An immunoassay in which a fluorescent tracer is used to detect an analyte of interest by triggering the emission of photons when subjected to polarized light.
Technology
A process to measure the proximity of two fluorochromes whereby the excitation energy of one fluorochrome is released and absorbed by the second fluorochrome. It is used to study interactions and structure of macromolecules. (NCI)
Technology
Fluorescent spectroscopy or fluorometry is a type of electromagnetic spectroscopy used for analyzing fluorescent spectra. It involves using a beam of light, usually ultraviolet light, that excites the electrons in molecules of certain compounds and causes them to emit light of a lower energy, typically, but not necessarily, visible light.
Technology
An immunological procedure in which the antibodies are coupled with molecules which fluoresce under ultra violet (UV) light. This makes them particularly suitable for detection of specific antigens in tissues or on cells.
Technology
Use of Giemsa stain to produce a characteristic staining pattern on chromosomes
Technology
A chromatographic technique in which the stationary phase is solid while the mobile phase is gaseous samples. The gaseous samples are separated based on their different adsorption ability to the solid phase.
Technology
An analytical technique wherein gas chromatography is coupled to mass spectrometry in order to separate, identify, and quantify substances in a sample.
Technology
Gel electrophoresis is a method of separating large molecules (such as DNA fragments or proteins) from a mixture of similar molecules by electrophoretic filtration through a gelatinous matrix. Subject to an electric field, each molecule in the sample mixture migrates through the matrix at a different rate, depending mainly on electrical charge and size, resulting in spatial separation within the matrix of each molecular species in the sample mixture. Agarose and acrylamide in a cylindrical tube or slab gel are commonly used media for electrophoresis of proteins and nucleic acids.
Technology
Gel permeation or sieve chromatography that is performed on porous gels that separate solutes on the basis of size. Smaller solutes are included within the particles of the gel matrix more frequently than larger solutes, thus affecting elution rates.
Technology
The process of measuring the extent of crossovers between chromosomes as a gauge of the distance between genes.
