What are the 3 main components of flow cytometry?
The three main components of a flow cytometer are the fluidics, optics, and electronics (Figure 1).
What is the function of a flow cytometer?
Flow Cytometry is a technique used to detect and measure physical and chemical characteristics of a population of cells or particles. In this process, a sample containing cells or particles is suspended in a fluid and injected into the flow cytometer instrument.
What is SSC and FSC?
The light scatter is measured by two optical detectors. One detector measures scatter along the path of the laser (1). This parameter is referred to as forward scatter (FSC). The other detector measures scatter at a ninety degree angle relative to the laser (1). This parameter is called side scatter (SSC).
What is immunology flow cytometry?
Flow cytometry is a technique used by biologists to observe populations of cells with high precision and accuracy. By combining data acquisition speed, sample dimension, precision, and measurement multiplicity, flow cytometry physically separates sub-populations of groups of cells.
What is granularity cells?
The granular cell is a large polygonal, oval, or bipolar cell with abundant, fine, or coarsely granular eosinophilic cytoplasm, and a small, pale-staining or vesicular nucleus acentrically located in the cell (see Fig. 4-43B and C).
What is SSC A?
DAPI-A scatterplot. A polygon gate was used to select the nuclei based on DAPI expression. This analysis profile allowed us to quantify the concentration of singlet (red), doublet (blue) and triplet (purple) nuclei in a known volume of sample.
What are integratedintegral membrane proteins?
Integral membrane proteins (IMPs) act as the gateways to cells. All cells and organelles are encased in an impermeable lipid bilayer and the IMPs we study are embedded in these membranes. They are the entry and exit routes for many ions, nutrients, waste products, hormones, drugs and large molecules such as proteins and DNA.
How do integral and peripheral proteins work together?
Sometimes a peripheral protein and integral protein will work in conjunction to complete a task. The basic function of at least one part of every integral protein is to attach the protein to a plasma membrane. This membrane may be the plasma membrane surrounding the mitochondria, or the inner membrane of the mitochondria.
How many alpha helices does an integral protein have?
An integral protein may only have one region of alpha helix, as shown in the far left of the image below. Many other proteins employ several alpha helices, which span the membrane. This allows for the creation of a protein channel, or a hole in the plasma membrane which allows various substances to pass.
How many times does the integral protein cross the plasma membrane?
The integral protein seen here crosses the plasma membrane (P) several times. This is not always the case, some integral proteins have only a single region which extends into the hydrophobic internal layer of the plasma membrane.