I’ve been told that I need to compensate my data for flow cytometry analysis. What does that mean?
By running single-color controls, it is possible to remove signal of one fluorophore that spills over into the collection channel for another fluorophore.
What kind of controls do I need for flow cytometry?
For compensation, you need to prepare a singly stained sample (or compensation beads) for each color parameter that you are using. In addition, we recommend that you use FMO (flow minus one) controls. These are controls in which you label cells or beads with every color in your panel, omitting one. Make one FMO control for each color. These controls are important for helping you properly set gates on your data.
Why should I worry about compensation in flow cytometry analysis?
In a perfect world, the fluorescence emission profile for each individual fluorophore would be a very intense, narrow peak, well separated from all other emission peaks. In reality, organic dyes and fluorescent proteins have broad emission peaks, and compensation must be employed (during or after data acquisition) to correctly assign fluorescence signal to each fluorophore. Compensation is important because it removes fluorescent signal from overlapping spectra so you know that the signal you see is only the signal from the fluorophore of interest.
How do I make compensation controls for antibodies?
All that you need for compensation controls is an unstained sample of your cells (or negative control beads) and samples with each of your fluorophores - one per tube. You want the single-stained controls to be as bright as you expect your brightest sample to be. Antibodies can be bound to beads instead of cells using our AbC Total Antibody Compensation Bead Kit (Cat. Nos. A10513 and A10497).
The human squamous oesophagus has widespread capacity for clonal expansion from cells at diverse stages of differentiation.
Authors:Barbera M, di Pietro M, Walker E, Brierley C, Macrae S, Simons BD, Jones PH, Stingl J, Fitzgerald RC,
Journal:
PubMed ID:24572143
Knowledge of the cellular mechanisms involved in homeostasis of human squamous oesophagus in the steady state and following chronic injury is limited. We aimed to better understand these mechanisms by using a functional 3D approach. Proliferation, mitosis and the expression of progenitor lineage markers were assessed in normal squamous oesophagus ... More
Haemocompatibility and ion exchange capability of nanocellulose polypyrrole membranes intended for blood purification.
Authors:Ferraz N, Carlsson DO, Hong J, Larsson R, Fellström B, Nyholm L, Strømme M, Mihranyan A,
Journal:J R Soc Interface
PubMed ID:22298813
Composites of nanocellulose and the conductive polymer polypyrrole (PPy) are presented as candidates for a new generation of haemodialysis membranes. The composites may combine active ion exchange with passive ultrafiltration, and the large surface area (about 80 m(2) g(-1)) could potentially provide compact dialysers. Herein, the haemocompatibility of the novel ... More
Immunophenotype and cytokine profiles of rhesus monkey CD56bright and CD56dim decidual natural killer cells.
Authors:Dambaeva SV, Durning M, Rozner AE, Golos TG
Journal:Biol Reprod
PubMed ID:21900681
The primate endometrium is characterized in pregnancy by a tissue-specific population of CD56(bright) natural killer (NK) cells. These cells are observed in human, rhesus, and other nonhuman primate decidua. However, other subsets of NK cells are present in the decidua and may play distinct roles in pregnancy. The purpose of ... More