No-wash, No-lyse Detection of Leukocytes in Human Whole Blood on the Attune NxT Flow Cytometer

No-wash, No-lyse Detection of Leukocytes in Human Whole Blood on the Attune NxT Flow Cytometer

20 Oct 2015

Standard methods for isolating and detecting leukocytes (white blood cells) in human whole blood are time-consuming and often involve significant manipulation and enrichment prior to analysis. In human whole blood, red blood cells outnumber white blood cells ~1,000-fold. This creates two hurdles in attempting to analyze whole blood samples without manipulation or enrichment: 1) collection of a sufficient number of white blood cell events for statistically meaningful data, and 2) differentiation of white blood cells from red blood cells given the high probability of coincident red blood cell events, which is clear when observing a conventional forward and side scatter profile of whole blood. This application note outlines a strategy for the detection of white blood cells within whole blood using the Attune NxT Flow Cytometer.

Invitrogen™ Attune™ NxT Flow Cytometer

Thermo Fisher Scientific

The Invitrogen™ Attune™ NxT flow cytometer can be designed to accommodate the most common fluorophores and fluorescent proteins used in flow cytometry to match the panels you are currently running. Multiple fluorescent proteins can be detected with an optional 561 nm laser. Whether you configure your system now or upgrade later, the Attune NxT flow cytometer can grow with you and your research needs. The Attune NxT flow cytometer, designed using acoustic-assisted hydrodynamic focusing, achieves sample-throughput rates of of 12.5 µL/min–1 mL/min or 12.5–1,000 µL/min—up to 10 times faster than traditional hydrodynamic focusing systems and data acquisition speeds of 35,000 events/sec. Acoustic focusing allows significantly higher sample rates, which simplifies sample preparation, reduces protocol times, and minimizes cell loss. This feature is useful for no wash, no lyse immunophenotyping protocols using whole blood and for samples that are inherently low in concentration, including cerebrospinal fluid and stem cell preparations. Your next result relies on the ability of your experimental design and your instrument to deliver more—more data, more detail, and more throughput. The Attune NxT flow cytometer was designed to meet the demands of more complex experiments, offering reliable data, day after day, in a grow-with-you system.   Features & Benefits: Modular design—Multiple configurations available—field upgradable. Save time—10X faster speeds with no loss in data quality. Simplified sample prep—No wash, no lyse options, non-clogging fluidics. Enables unique applications—Complex protocols on a broad range of cell types and samples.

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Flow Cytometry / Cell CountingFlow cytometers are used to count, sort and examine multiple characteristics of cells. Other cell analysis equipment includes image cytometers, cell counters, fluorescence-activated cell sorters (FACS), magnetic-activated cell sorters (MACS), and a range of flow cytometry assay kits. Flow cytometers can reveal information on cell viability, cell proliferation, apoptosis and cell cycle progression, as well as identify cell populations and intracellular or cell-surface molecules. Additionally, some flow cytometers, known as FACS, have an additional sorting function after analysis. Cell counters and image cytometers count live and dead cell populations and can also conduct cell proliferation assays. Find the best flow cytometers, cell counters and cell sorters in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Cell ManipulationCell WashingLysisLeukocytesRed Blood Cells