homogeneous Protocols

Category: Cell Biology and Cell Culture: Cell Viability Protocols

The CellTiter-Glo® Luminescent Cell Viability Assay is a homogeneous method to determine the number of viable cells in culture. Detection is based on using the luciferase reaction to measure the amount of ATP from viable cells. The amount of ATP in cells correlates with cell viability. - [Read Cell Viability Assays that Measure ATP Protocol]

Category: Cell Biology and Cell Culture: Cell Viability Protocols

The CellTiter-Blue® Cell Viability Assay uses an optimized reagent containing resazurin. The homogeneous procedure involves adding the reagent directly to cells in culture at a recommended ratio of 20µl of reagent to 100µl of culture medium. - [Read Cell Viability Assays that Measure Metabolic Capacity Protocol]

Category: Cell Biology and Cell Culture: Cell Viability Protocols

Choosing a cell viability or cytotoxicity assay from among the many different options available can be a challenging task. Includes information on: Establishing an In Vitro Model System; Choosing an Endpoint to Measure; Characterizing Assay Responsiveness; Determining Dose and Duration of Exposure; Homogeneous Assays for Multiwell Formats and Automated Screening; Additional Factors to Consider When Choosing a Cell Viability Assay; Cell Viability Assays that Measure ATP Protocol; etc.. - [Read Cell Viability Information For Protocols and Applications]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols

Protocol for CellTiter-Glo luminescent cell viability assay. This assay is a homogeneous method of determining the number of viable cells in culture based on quantitation of the ATP present, which signals the presence of metabolically active cells. - [Read CellTiter-Glo Luminescent Cell Viability Assay Protocol]

Category: Cytogenetics Protocols: In Situ Hybridization Protocols

Choosing the right labeling method for your hybridization experiment. Includes: Homogeneous labeling methods for DNA; Homogeneous labeling methods for RNA; Stability of probe-target interaction; Nonradioactive labeling of oligonucleotides; Double-stranded versus single-stranded probes. - [Read Choosing the Right Labeling Method for your Hybridization Experiment]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols

Protocol describes automation of the CytoTox-ONE Homogeneous Membrane Integrity Assay. - [Read CytoTox-ONE Homogeneous Membrane Integrity Assay Protocol]

Category: RNAi Technology Protocols

Information on how detect and quantitate MicroRNA in laser capture microdissection samples. Includes: Obtain Laser Capture Microdissected Samples; Isolate miRNA from LCM Samples; Quantitate miRNA by qRT-PCR; Detection of miRNA in Microdissected Tissue from Mouse Brain by qRT-PCR; Differential Expression of MicroRNA in Whole Brain Tissue Compared to a More Homogeneous Population of Cells. - [Read Detect and Quantitate MicroRNA in Laser Capture Microdissection Samples]

Category: DNA Protocols: EMSA DNA-Protein Protocols

Magnetic DNA affinity purification of yeast transcription factor tau--a new purification principle for the ultrarapid isolation of near homogeneous factor. Gabrielsen et al. 1989 - [Read DNA-Binding Protein Purification with Dynabeads.]

Category: DNA Protocols: SNP Protocols

FP-TDI Method for SNP Detection. The FP-TDI protocol was originally reported by Drs. Chen, Levine, and Kwok at Washington University in 19991,2. FP-TDI stands for template directed dye terminator incorporation assay with detection by fluorescence polarization. It is a single base primer extension assay couple with homogeneous FP detection. Perkin Elmer - [Read FP-TDI Method for SNP Detection]

Category: Pharmacology and Toxicology Protocols: Enzyme Assays Protocols

Homogeneous caspase-3/7 assay. Includes: Detection of Caspase-3/7 Activity in Cell Culture;  Detection of Caspase-3 or -7 Activity in Purified Caspase Preparations; Positive and Negative Cell Culture Controls. - [Read Homogeneous Caspase 3-7 Assay Protocol]

Category: Mouse Protocols

Protocol that investigates macrophage activation using a more homogeneous population of cells, macrophages derived from immature progenitor cells in bone marrow can be studied. A second protocol describes the isolation of bone marrow-derived progenitor cells and propagation of these immature macrophages by CSFs or IL-3. - [Read Isolation of Murine Macrophages Protocol]

Category: Fungi Protocols

Protocol for the preparation of solid tissue for Aspergillus galactomannan antigen detection by Platelia (Biorad). Technique was designed for use on human serum. However, it may also be possible to perform this method on solid tissues and organic solutions. Viscous solution and tissue specimens need to be pre-treated to achieve the extraction of the Aspergillus antigen and to get a homogeneous sample in solution. - [Read Preparation of Solid Tissue for Aspergillus Galactomannan Antigen Detection by Platelia Protocol]

Category: Nucleic Acid Electrophoresis Protocols: Pulsed Field Gel Electrophoresis Protocols

Protocol for pulsed-field gel electrophoresis via contour-clamped homogeneous electric field gels. In CHEF gels, the electric field is generated from multiple electrodes, arranged in a square of hexagonal contour around the horizontal gel and clamped to predetermined potentials.  Using a combination of low field strengths, low concentrations of aragose, long switching intervals, and extended periods of electrophoresis, DNAs up to 5000 kb can be resolved. - [Read Pulsed-field Gel Electrophoresis via Contour-clamped Homogeneous Electric Field Gels Protocol]

Category: Viral Culture and Isolation Protocols: Viral Culture Protocols

When an individual bacterial virus grows in a bacterial host suspended in a top agar lawn, its progeny infect and lyse the surrounding host cells. This causes the appearance of a "hole" or plaque in the otherwise homogeneous bacterial lawn. Since each plaque represents a single virus, the number of viruses in the aliquot added to the plate is equal to the number of plaques which appear. - [Read Titering of Bacterial Viruses Protocol]