Simple and universally applicable methods for staining fixed cells are presented, as are methods that utilize detergents and proteolytic treatment to permeabilize cells. Additionally, supravital cell staining with Hoechst 33342, which is primarily used for sorting live cells for subsequent culturing based on DNA-content differences, is also described. Also presented are methods for staining of cell nuclei isolated from paraffin-embedded tissues, and deconvolution of DNA-content-frequency... - [Read Analysis of Cellular DNA Content by Flow Cytometry Protocol]
Analysis of Flow Cytometry Data Protocol- https://catalog.invitrogen.com/index.cfm?fuseaction=iProtocol.unitSectionTree&treeNodeID=9E661C2CE22FCCB1C294CD8376FD8830&objectid=6674E762AC837B13929440A1F32AAEF0
Provides several approaches to flow cytometry data analysis. Frequency determinations based on analysis of single-parameter fluorescence histograms and dual-parameter contour plots are presented. Steps are described for calculating values for signal-to-noise ratios when logarithmic amplification is used for data collection. - [Read Analysis of Flow Cytometry Data Protocol]
Different cell types vary in their phosphatidylserine (PS) content, along with the amount of PS exposure on the cell surface after cell death. This protocol is a guideline for getting started, however it may be necessary to adjust the concentration of the Annexin V-FITC. - [Read Annexin V Protocol for Flow Cytometry]
A sensitive method for the detection of apoptosis by single laser flow cytometry. Methodology includes: Staining for detection of apoptosis, Direct Staining Procedure, Indirect Staining Procedure, Protocol for the use of actinomycin D (AD) on samples that were stained with 7-AAD for apoptosis and fixed in formaldehyde. - [Read Apoptosis Detection Protocol By Single Laser Flow Cytometry]
Flow cytometers must be calibrated prior to fluorescence intensity measurements because of inherent instrument variability. To correct for this variability, a standard particle (fixed chicken red blood cells, or CRBCs) must be analyzed on the instrument prior to each experiment and photomultiplier tube (PMT) voltages adjusted accordingly to place the CRBC fluorescence emission peaks into predetermined target channels. - [Read Calibration of Becton Dickinson Flow Cytometers for Relative Fluorescence Intensity Measurements]
This assay is based on carboxyfluorescein labeled fluoromethyl ketone (FMK)-peptide inhibitors of caspases. Includes: Working Dilution of FMK-peptide inhibitors; 1X Working Dilution Wash Buffer; Protocol for Flow Cytometry. - [Read CaspaTag Caspase Activity Protocol]
Protocol uses specific antibodies coupled to one of four fluorochromes: fluorescein isothiocyanate (FITC), R-phycoerythrin (PE), peridinin chlorophyll-a (PcP),
and allophycocyanin (APC). These fluorochromes can be used simultaneously to stain and analyze the expression patterns of four different proteins in the same sample. The
fluorochrome stained cell populations are analyzed using a FACSCalibur dual-laser flow cytometer. - [Read Characterization of Cells by Flow Cytometry Protocol]
Fluorochromes can be used simultaneously to stain and analyze the expression patterns of four different proteins in the same sample. The fluorochrome stained cell populations are analyzed using a FACSCalibur dual-laser flow cytometer. - [Read Characterization of Cells by Flow Cytometry Protocol]
Immobilized metal ion affinity chromatography (IMAC) exploits a molecule’s affinity for chelated metal ions. The amino acid histidine present in many proteins forms complexes with transition metal ions such as Cu2+, Zn2+, Ni2+ and Fe3+. Chelating Sepharose™ Fast Flow with a suitable immobilized metal ion will therefore selectively retain proteins with exposed histidine. - [Read Chelating Sepharose Fast Flow Protocol]
Protocol for configuration, column construction, and column packing for a capillary liquid chromatography system. Protocol describes a procedure for adapting conventional HPLC systems to provide accurate low-flow rates (0.4-4 µl/min) and gradients required to operate slurry-packed capillary columns. A key component of this system is a commercial axial-beam longitudinal flow cell that can be fitted to several commercial UV detectors. - [Read Configuration Column Construction Column Packing for Capillary Liquid Chromatography]
Describes assays used to determine the distribution of a population of cells to the different stages of the cell cycle as analyzed by flow cytometry. Staining the DNA with different fluorescent dyes, propidium iodide or DAPI, is one of the most direct ways of staging the cells based on DNA content. - [Read Determining Cell Cycle Stages by Flow Cytometry Protocol]
This Microarray Protocol Preparation of Fluorescent DNA Probes from Human mRNA protocol describes the production of probes labeled with the fluorescent dyes, Cy3 and Cy5, following the synthesis of cDNA from human mRNA and the hybridization of the probes to DNA microarrays.
This protocol a protocol on how to generate transfected embryonic stem (ES) cell clones. The previous protocol in this series is the Protocol for Electroporation of ES cells. The next protocol in the series is the Protocol on Disaggregation, Expansion, and Freezing of Transfected ES Clones.