Stains and Dyes

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6,466 – 6,480 of 7,245 results

6,466

Electron Microscopy Sciences Weigert's Iron Hematoxylin B 1 LT

Weigert's Iron Hematoxylin Stain is used selectivity for nuclei, fungal, and general applications. It is a ready-to-use, high quality staining solution that is packaged and prepared in convenient and precise quantities.

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6,467

Electron Microscopy Sciences Weigert's Iron Hematoxylin A, 500ml

Stain selectivity for nuclei, fungal, and general applications. Ready-to-use.

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6,468

Cayman Chemical Nitro Blue Tetrazolium (chloride), CAS: 298-83-9, 500 mg

A chromogenic substrate that, like other tetrazolium compounds, can be reduced to produce a colored formazan derivative; used in the “NBT test” to evaluate the activity of NADPH oxidase in phagocytes; paired with PCIB for the colorimetric detection of alkaline phosphatase activity

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6,469

Cayman Chemical N-4-Tosyl-L-arginine methyl ester (hydrochloride), Purity: ≥98%, CAS: 1784-03-8, 25 g

A synthetic substrate of serine proteases, including thrombin, trypsin, chymotrypsin, and kallikreins; also binds to and inhibits anaphase-promoting complex, a ubiquitin ligase, in Xenopus egg extract

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6,470

Cayman Chemical Carbenoxolone (sodium salt), Purity: ≥98%, CAS: 7421-40-1, 25 g

A derivative of β-glycyrrhetinic acid a major metabolite of glycyrrhizin, one of the main constituents of licorice, with anti-ulcerative and anti-inflammatory properties; inhibits 11β-HSD1 conversion of cortisol to cortisone, which contributes to its potential to induce mineralocorticoid hypertension; also inhibits 11β-HSD2 conversion of cortisone to cortisol resulting in improved cognitive and neuroprotective effects

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6,471

Cayman Chemical Taurocholic Acid (sodium salt), Purity: ≥95%, CAS: 145-42-6, 25 g

A taurine-conjugated form of cholic acid; serum levels of TCA are decreased in patients with Crohn’s disease and those with ulcerative colitis with no extraintestinal manifestations, but are increased in patients with ulcerative colitis accompanied by hepatobiliary disease

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6,472

AnaSpec Hoechst 33258, 20 mM solution in water, | MW 533.88 | (5 mL)

Hoechst 33258, 20 mM solution in water, ; MW 533.88; (5 mL) Cell-permeant DNA minor groove binding dye

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6,473

AnaSpec Hoechst 33342, 20 mM solution in water, | MW 561.93 | (5 mL)

Hoechst 33342, 20 mM solution in water, ; MW 561.93; (5 mL) Cell-permeant DNA minor groove binding dye

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6,474

Sigma Aldrich Fine Chemicals Biosciences BioTracker 655 Red Cytopla

Lipophilic carbocyanine dyes are widely used for labeling neurons in tissues by retrograde labeling and to label membranes in a wide variety of cell types. The dyes are weakly fluorescent in aqueous phase but become highly fluorescent in lipid bilayers. Staining is highly stable with low toxicity and very little dye transfer in between cells making the dyes suitable for long-term cell labeling and tracking studies. When live cells are stained the dyes label plasma membranes and also are taken up into endocytic compartments. Cells can be fixed either before or after staining although permeabilization affects the staining pattern.Unlike PKH dyes BioTracker Cytoplasmic Membrane Dyes do not require a complicated hypoosmotic labeling protocol. They are ready-to-use dye delivery SOLUTIONons that can be added directly to normal culture media to label suspended or adherent cells in culture. Spectral PropertiesAbsorbance 644nmEmission 665nm

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6,475

Sigma Aldrich Fine Chemicals Biosciences BioTracker 488 Green Lipid

Lipids are fundamental building blocks of cells and play important cellular roles. Lipids are key components of the plasma membrane and other cellular compartments including the nuclear membrane endoplasmic reticulum Golgi apparatus and trafficking vesicles such as endosomes and lysosomes. Intracellular lipid droplets are cytoplasmic organelles involved in the storage and regulation of triglycerides and cholesterol esters. Lipids have been implicated in various diseases including heart vascular and neurological diseases.BioTracker Lipid dyes rapidly stain lipid droplets in live or fixed cells with no wash step and minimal background staining of cellular membranes or other organelles. Cells also can be fixed and permeabilized after staining.The BioTracker 488 Green Lipid Dye has an excitation around 430 nm and can be excited equally well at 405 nm or 488 nm. In cells it stains lipid droplets with bright green fluorescence using the fITC detection channel.Spectral PropertiesAbsorb

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6,476

Sigma Aldrich Fine Chemicals Biosciences BioTracker 400 Blue Cytopl

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6,477

Sigma Aldrich Fine Chemicals Biosciences BioTracker NucViewR 488 Gr

Caspases are a family of protease enzymes that play essential roles in programmed cell death termed apoptosis. Caspase-3 is a caspase protein that interacts with caspase-8 and caspase-9 and sequential activation of plays a central role in the execution-phase of cellular apoptosis.The BioTracker NucView 488 Green Caspase-3 Dye provides a convenient live cell tool for profiling apoptotic cell populations based on caspase-3/7 activity using either fluorescence microscopy or flow cytometry. In contrast to other fluorogenic caspase substrates or fluorescent caspase inhibitor based (fLICA) assays the BioTracker NucView 488 Caspase-3 Dye can be used to detect caspase-3/7 activity within individual intact cells without inhibiting apoptosis progression. The substrate consists of a fluorogenic DNA dye coupled to the caspase-3/7 DEVD recognition sequence. The substrate which is initially non-fluorescent penetrates the plasma membrane and enters the cytoplasm. In apoptotic cells caspase-3/7 c

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6,478

Electron Microscopy Sciences Tissue Marking Dye Set

Fast drying dye is ideal for marking tissue biopsies and pathology specimens and can be used with frozen or fixed tissues. It is a specially formulated binding pigment that evenly coats the tissue without penetrating the tissue surface. The marking dyes do not interfere with diagnostic interpretation due to the fact colors are not similar to standard histopathology dyes. It can be used to permanently mark the margins of excised surgical specimens for exact orientation.

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6,479

Chem-Impex International, Inc. Thiazole Yellow G (indicator for adsorption and fluorescence) | 1829-00-1 | MFCD00013091 | 25G

Thiazole Yellow G (indicator for adsorption and fluorescence), 1829-00-1, MFCD00013091, 25G

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6,480

Cayman Chemical Brilliant Blue G, CAS: 6104-58-1, 50 g

A dye which stains proteins in gels with ease and sensitivity; used in the Bradford to quantify the amount of protein in a solution; selectively inhibits P2X7 (IC50s = 10.1 nM and 265 nM for rat and human P2X7, respectively) and reduces neurological injury secondary to traumatic brain injury in mice

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