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6745 results for Assays

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Assays

An assay is an investigative procedure in laboratory medicine, pharmacology, environmental biology, and molecular biology for qualitatively assessing or quantitatively measuring the presence or functional activity of the analyte, or the entity being targeted by the assay. Generally, assays involve biological materials or phenomena which tend to be intrinsically more complex in composition or in behavior than what can be handled by traditional chemical analysis and titration.

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Glucose (HK) assay kit

Supplier: Merck

The Glucose (HK) Assay Kit is for the quantitative, enzymatic determination of glucose in food and other material.

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Triglyceride colorimetric assay kit

Supplier: Cayman Chemical

Triglyceride Colorimetric Assay Kit is a simple, reproducible and sensitive tool for assaying triglycerides in plasma, serum, cell lysates and tissue homogenate samples.

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Phagocytosis assay kit (IgG FITC)

Supplier: Cayman Chemical

Phagocytosis Assay Kit (IgG FITC) for the identification of factors regulating the phagocytic process in vitro.

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Cell-based assay calcein AM

Supplier: Cayman Chemical

Cellular assay, Cell-based assay calcein AM

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Thiol Detection Assay Kits

Thiol Detection Assay Kits

Supplier: Cayman Chemical

A simple, reproducible, and sensitive tool for assaying free thiol content in samples.

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Fluorescent protease assay, Fluoro™

Fluorescent protease assay, Fluoro™

Supplier: G-Biosciences

The Fluoro™ Protease Assay Kit is designed for the quantitative determination of proteases present in a protein sample. The assay uses fluorescein isothiocyanate (FITC)-labelled casein as a general protease substrate. The fluorescein label on the FITC-casein is highly quenched. When the proteases present in the sample of interest digest the FITC-casein substrate into smaller peptides, the quenching of the fluorescence label is relieved and the fluorescence of the substrate is increased. The fluorescence of the FITC-labeled peptide is measured with excitation at 485 nm and emission at 530 nm to determine protease activity. The kit detects picogram level of proteases present in the sample.

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Protein quantitation assay kits, CB-X™ Protein assay

Protein quantitation assay kits, CB-X™ Protein assay

Supplier: G-Biosciences

CB-X™ Protein Assay is a Coomassie dye based protein assay based on the Bradford Protein Assay. For protein samples in simple, uncomplicated aqueous buffers CB-X™ is a highly sensitive, single reagent assay that can be performed in 5 minutes. For complicated protein samples, CB-X™ Protein Assay is supplied with reagents to clean up the samples and remove all reagents and chemicals that interfere with accurate protein estimation in a single step. These reagents include detergents, chaotropes, reducing agents, alkylating agents, sugars, high salt concentrations, buffering agents and chelating agents. The clean up stage and subsequent protein assay is performed in a single tube to ensure no protein loss and to maintain the accuracy of the assay.

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Protein quantitation assay kits, Non-Interfering™ (NI™) Protein Assay

Protein quantitation assay kits, Non-Interfering™ (NI™) Protein Assay

Supplier: G-Biosciences

A highly sensitive colorimetric protein assay that overcomes interference of common laboratory agents present in protein solutions and shows minimal protein-to-protein variation. The assay is unaffected by the presence of common laboratory agents such as reducing agents, chelating agents, detergents, amines, sugars, chaotropes, salts, drugs, antibiotics, cobalt, and others.

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ATP-Glo™ Bioluminometric cell viability assay

ATP-Glo™ Bioluminometric cell viability assay

Supplier: Biotium

ATP-Glo™ Bioluminometric Cell Viability Assay offers a highly sensitive assay for quantifying ATP. The homogeneous assay involves a single addition of ATP-Glo™ Detection Cocktail directly to cells in culture medium.

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Protease assay kit

Protease assay kit

Supplier: G-Biosciences

This Protease Assay Kit is designed for the quantitative determination of proteases present in protein sample, using a dye-labelled protein substrate. The proteases present in the sample of interest will digest the protein substrate and release dye labelled peptides. The absorbance of the dye-labelled peptide is measured at 570 nm for determination of protease activity.

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Uric acid assay kit

Uric acid assay kit

Supplier: Cayman Chemical

Uric Acid Assay Kit is used to measure uric acid in serum, plasma and urine.

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Millicell® µ-Migration Assay Kit

Millicell® µ-Migration Assay Kit

Supplier: Merck

This Kit overcomes the limitations of traditional multiwell migration assays. Its microfluidic, low-volume technology promotes a stable, diffusion-generated concentration gradient that is consistently linear and lasts for more than 48 hours.

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Glucose Uptake Cell-Based Assay Kit

Glucose Uptake Cell-Based Assay Kit

Supplier: Cayman Chemical

A cell-based assay for studying modulators of cellular glucose uptake.

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Oct4 transcription factor assay kit

Oct4 transcription factor assay kit

Supplier: Cayman Chemical

96-Well assay for measurement of Oct4.

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Compatible Lowry protein assay

Supplier: G-Biosciences

These CL (Compatible Lowry) Protein Assay is based on the widely cited protein assay by Lowry et. al. (1951). The CL Protein Assay improves upon the traditional Lowry method to be compatible with common laboratory agents known to interfere with Lowry protein assays such as reducing agents (dithiothreitol (DTT), ß-mercaptoethanol and TCEP), detergents, chelating agents, amines, sugars, strong chaotropic buffers, salts, drugs, antibiotics, cobalt and other common laboratory agents.

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SREBP-2 transcription factor assay kit

SREBP-2 transcription factor assay kit

Supplier: Cayman Chemical

96 well assay for measurement of SREBP-2.

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NF-κB (p65) transcription factor assay kit

NF-κB (p65) transcription factor assay kit

Supplier: Cayman Chemical

NF-κB (p65) Transcription Factor Assay Kit is a 96-well assay for measurement of NF-κB (p65).

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Cell proliferation assay kit, WST-1

Supplier: Cayman Chemical

WST-1 Proliferation Assay Kit provides an easy to use tool for studying the induction and inhibition of cell proliferation in any in vitro model. The assay is based on the reduction of tetrazolium salt WST-1 to soluble formazan by electron transport across the plasma membrane of dividing cells. This kit will also allow investigators to screen drug candidates involved in regulation of cell cycle.

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Cell viability assay kits

Supplier: Biotium

MTT, XTT, and resazurin are reduced by mitochondrial metabolic activity to yield coloured or fluorescent products, and thus are useful for and assaying cell viability and quantitating cell number. MTT and XTT are reduced to coloured formazin salts that can be measured by absorbance. MTT generates an insoluble formazin salt, requiring cell lysis before the absorbance can be measured, while XTT does not require cell lysis for measurement. Resazurin is a non-fluorescent blue dye that is reduced to the pink fluorescent compound resorufin, which can be measured by fluorescence or absorbance.

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Calcein-AM cell viability assay kits

Calcein-AM cell viability assay kits

Supplier: Biotium

Calcein-AM is a non-fluorescent, membrane permeable compound. Esterase activity in the cytoplasm of viable cells converts calcein-AM to the green fluorescent, membrane impermeant compound calcein, which is retained in viable cells with intact plasma membranes. The Viability/Cytotoxicity Assay kit for Animal Live & Dead Cells pairs calcein-AM with the vital dye ethidium homodimer III for quantitation of live and dead cells.

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QBT™ Fatty acid uptake assay kit

QBT™ Fatty acid uptake assay kit

Supplier: Molecular Devices

QBT™ Fatty Acid Uptake Assay Kit is a homogeneous assay amenable to high-throughput screening. The kits deliver pre-optimized, fluorescence-based formulations to expedite assay development and screening of fatty acid transporters.

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LDH Cytotoxicity Assay Kit

LDH Cytotoxicity Assay Kit

Supplier: Cayman Chemical

For measurement of LDH activity as an indicator of cell death.

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Bicinchoninic acid (BCA) protein assay

Bicinchoninic acid (BCA) protein assay

Supplier: G-Biosciences

The Bicinchoninic Acid (BCA) Protein Assay is a highly sensitive colorimetric assay that is compatible with detergent solubilised protein solutions.

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p53 transcription factor assay kit

p53 transcription factor assay kit

Supplier: Cayman Chemical

96-Well assay for measurement of p53.

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VWR®, Bradford protein assay, proteomics grade

VWR®, Bradford protein assay, proteomics grade

Supplier: VWR Chemicals

The Bradford protein assay is the preferred colorimetric assay for quantifying total protein concentration. Based upon complex formation between basic and aromatic amino acid residues with Coomassie® Brilliant Blue G-250 dye, the Bradford method is easier, faster, and more sensitive than the Lowry method.

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Calcium assay kits, FLIPR® Calcium 5 assay kit

Calcium assay kits, FLIPR® Calcium 5 assay kit

Supplier: Molecular Devices

The FLIPR® Calcium 5 Assay Kit provides a fast, simple, and reliable fluorescence-based assay for detecting changes in intracellular calcium.

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Neutrophil/Monocyte Respiratory Burst Assay Kit

Neutrophil/Monocyte Respiratory Burst Assay Kit

Supplier: Cayman Chemical

Neutrophil/Monocyte Respiratory Burst Assay Kit provides PMA, dihydrorhodamine 123, and additional reagents necessary for inducing and quantifying a respiratory burst response in neutrophils and monocytes by flow cytometry. The assay can be performed on whole blood or on cells in various types of cell culture media. Because the assay reagents are not species-specific, this assay can be used in any species or cell type capable of producing a NADPH oxidase-dependent respiratory burst response.

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TUNEL assay kits

TUNEL assay kits

Supplier: Biotium

TUNEL (terminal deoxynucleotidyl transferase (TdT) mediated dUTP nick-end labeling) is highly selective for the detection of apoptotic cells, but not necrotic cells or cells with DNA strand breaks resulting from irradiation or drug treatment. In this assay, TdT enzyme catalyses the addition of labeled dUTP to the 3’ ends of cleaved DNA fragments. Fluorescent dye-conjugated dUTP can be used for direct detection of fragmented DNA by fluorescence microscopy or flow cytometry.

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PPARδ transcription factor assay kit

PPARδ transcription factor assay kit

Supplier: Cayman Chemical

A 96-well assay for measurement of PPARδ DNA binding activity.

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NF[kappa]B transcription factor assay kits

Supplier: Rockland Immunochemicals

These assays are non-radioactive methods for detecting specific transcription factor DNA binding activity in nuclear extracts and whole cell lysates. A specific dsDNA sequence containing the NF[kappa]B response element is immobilized on the bottom of the wells in a 96-well plate. The transcription factor is detected by the addition of a specific primary antibody. A colorimetric readout at 450 nm is obtained through a horseradish peroxidase-conjugated secondary antibody.

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