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Flow cytometry (FC) is a technique used to detect and measure the physical and chemical characteristics of a population of cells or particles. [1] [2] [3] [4]In this process, a sample containing cells or particles is suspended in a fluid and injected into the flow cytometer instrument.
Flow cytometry bioinformatics requires extensive use of and contributes to the development of techniques from computational statistics and machine learning. Flow cytometry and related methods allow the quantification of multiple independent biomarkers on large numbers of single cells. The rapid growth in the multidimensionality and throughput ...
A wide (hundreds of micrometers in diameter) tube made of glass or plastic is used, through which a "wall" of fluid called the sheath flow is pumped. The sample is injected into the middle of the sheath flow. If the two fluids differ enough in their velocity or density, they do not mix: they form a two-layer stable flow. [2]
Cell cycle analysis by DNA content measurement is a method that most frequently employs flow cytometry to distinguish cells in different phases of the cell cycle.Before analysis, the cells are usually permeabilised and treated with a fluorescent dye that stains DNA quantitatively, such as propidium iodide (PI) or 4,6-diamidino-2-phenylindole (DAPI).
In cytometry, compensation is a mathematical correction of a signal overlap between the channels of the emission spectra of different fluorochromes. [1] [2]The photons emitted by fluorochromes have different energies and wavelengths and as flow cytometers use photomultiplier tubes (PMT) in order to convert the photons into electrons, the detector can register the signal from more than one ...
Flow cytometry is a method in cell biology that employs the deflection of laser light a well as the excitation of fluorescent dyes to analyse various properties of a high number cells in a relatively short time. This category lists methods and tools used in flow cytometry.
Photoacoustic flow cytometry operates on similar principles, but utilizes a photoacoustic signal to differentiate cellular patterns. Furthermore, flow cytometry provides great ex-vivo analysis, but due to its pure optical source its penetration depth is limited making in-vivo analysis limited. Alternatively, photoacoustics may provide an ...
Flow cytometry screening has been used for primary screening of a large number (~1000) of hybridoma clones recognizing the native form of the antigen on the cell surface. [4] In the flow cytometry-based screening, a mixture of antigen-negative cells and antigen-positive cells is used as the antigen to be tested for each hybridoma supernatant ...