What do my flow cytometry results mean?
Flow cytometry can identify the type of cells in a blood or bone marrow sample, including the types of cancer cells. It detects types of cancer cells based on either the presence or the absence of certain protein markers (antigens) on a cell’s surface.
How do you perform a flow cytometry?
Flow cytometers take in a suspension of monodisperse single, unclumped cells and run them one at a time (single file) past a laser beam where each cell passes through the laser beam, scattered and fluorescent light and are then counted and sorted or further characterized.
Why is flow cytometry important?
By using flow cytometry to isolate cell populations, immune competence can be measured against cell population, cell stage, and other relevant variables. If there are deficiencies present, flow cytometry is an efficient way to determine this.
Who uses flow cytometry?
Flow cytometry can analyze replication states using fluorescent dyes to measure the four distinct phases of the cell cycle. Along with determining cell cycle replication states, the assay can measure cell aneuploidy associated with chromosomal abnormalities.
Which is a specific type of flow cytometer?
A specific type of traditional flow cytometer is the cell sorter which can purify and collect samples for further analysis. A cell sorter allows the user to select (gate) on a population of cells or particles which is positive (or negative) for the desired parameters and then direct those cells into a collection vessel.
How is flow cytometry used in mass spectrometry?
Mass cytometers combine time-of-flight mass spectrometry and flow cytometry. Cells are labeled with heavy metal ion-tagged antibodies (usually from the lanthanide series) instead of fluorescently-tagged antibodies and detected using time-of-flight mass spectrometry.
How are light signals read in flow cytometry?
Flow cytometers utilize lasers as light sources to produce both scattered and fluorescent light signals that are read by detectors such as photodiodes or photomultiplier tubes. These signals are converted into electronic signals that are analyzed by a computer and written to a standardized format (.fcs) data file.
How are fluorescent reagents used in flow cytometry?
Cell populations can be analyzed and/or purified based on their fluorescent or light scattering characteristics. A variety of fluorescent reagents are utilized in flow cytometry. These include, fluorescently conjugated antibodies, DNA binding dyes, viability dyes, ion indicator dyes and fluorescent expression proteins.