1051 Results for: "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

An important fluorophore prepared in high purtity with a detection limit of TMR-labeled amino acids by capillary electrophoresis of approx. 600 molecules. Readily excited by the 546 nm spectral line from mercury-arc lamps used in fluorescent microscopes, and is intrinsically more photostable than fluorescein.

Supplier: SIGMA ALDRICH MICROSCOPY

Toluidine blue O, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

New Methylene Blue N zinc chloride double salt has been used as a photosensitizer for the in vitro photodynamic inactivation of plant-pathogenic fungi Colletotrichum acutatum and Colletotrichum gloeosporioides. It has also been used to determine the in vitro susceptibilities of Trichophyton mentagrophytes and Trichophyton rubrum microconidia to photodynamic antimicrobial chemotherapy (PACT).

Supplier: SIGMA ALDRICH MICROSCOPY

Disperse blue 1 is a grey to black powder. Disperse dyes are known to be insoluble in water and are applied to the substrate as suspensions or dispersions by dissolving in hydrophobic regions of the polymers making up the fiber.

Supplier: SIGMA ALDRICH MICROSCOPY

Spurr resin is a hydrophobic resin. It is less viscous than epon mixtures and is easier to dispense. The low viscosity of the resin contributes to its penetration in tissue, mineral and dense structures. A low viscosity of 60 cps also allows easy penetration into a variety of difficult materials.

Supplier: SIGMA ALDRICH MICROSCOPY

When blood films are stained using Giemsa Stain, the nucleus and cytoplasm of white blood cells take on characteristic blue or pink coloration. The use of purified eosin and thiazine dyes minimizes lot-to-lot variation.

Supplier: SIGMA ALDRICH MICROSCOPY

Congo red, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Fura 2-AM (Fura 2) is a calcium-specific ratio-metric fluorescent dye. It is also known as acetoxy-methyl-ester. In response to calcium ions, ratio metric dyes like Fura 2 changes their respective excitation or emission spectra. The intracellular calcium concentration is determined by the fluorescence emission ratio or excitation at distinct wavelengths. Fura 2 has an emission peak at 505 nm, and the excitation peak ranges between 340 to 380 nm and is the preferred calcium indicator.

Supplier: SIGMA ALDRICH MICROSCOPY

Diatrizoic acid has been used as a contrast-enhancing fluid for X-ray based measurements.

Supplier: SIGMA ALDRICH MICROSCOPY

Jenner's stain,certified by the Biological Stain Commission (Jenner Stain; Eosin-Methylene Blue)

Supplier: SIGMA ALDRICH MICROSCOPY

Iodonitrotetrazolium chloride has been used for the staining of cells. It has been used as a coupling agent in the enzymatic assay of D-arabinitol.

Supplier: SIGMA ALDRICH MICROSCOPY

Phenol Red is a phenolsulfonphthalein compound. It is present as a sulfonated hydroxyquinone in weakly acidic aqueous solutions. In alkaline solutions, the dye forms a hydrophilic dianion (a small, red anion and has a larger conjugated system than the yellow hydroxyquinone).

Supplier: SIGMA ALDRICH MICROSCOPY

Phloxine B has been used as a component of yeast extract peptone dextrose (YEPD) to grow Schizosaccharomyces pombe.

Supplier: SIGMA ALDRICH MICROSCOPY

This is the pure, principal component of mixtures commonly referred to as Basic Fuchsin.

Supplier: SIGMA ALDRICH MICROSCOPY

Janus Green B has been used in staining technique to determine cell density, to detect the presence of telocytes in trachea and lungs and used as a dye to visualize bonghan ducts inside lymphatic vessels of rabbits.

Supplier: SIGMA ALDRICH MICROSCOPY

Intended for use in the study of connective tissue, muscle and collagen fibers. Stains collagen green.

Supplier: SIGMA ALDRICH MICROSCOPY

Intended for use in the Sigma Masson Trichrome Procedure, HT15.

Supplier: SIGMA ALDRICH MICROSCOPY

Phloxine B has been used to trace the uptake of double stranded RNA by green peach aphids. It has also been used to stain yeast strains.

Supplier: SIGMA ALDRICH MICROSCOPY

Methylene blue ≥82% (dye content), certified by the Biological Stain Commission, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

May Grunwald's eosin-methylene blue solution, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

May Grunwald's eosin-methylene blue solution, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Neutral red (C.l. 50040, Cl Basic red 5) is a protonated diaminophenazine dye that has a small planar conjugated system.

Supplier: SIGMA ALDRICH MICROSCOPY

5-Fluorouracil has been used to induce apoptosis in cells. It has been used as a chemosensitising agent. A potent antitumor agent that affects pyrimidine synthesis by inhibiting thymidylate synthetase, thus depleting intracellular dTTP pools. It is metabolized to ribonucleotides and deoxyribonucleotides, which can be incorporated into RNA and DNA. Treatment of cells with 5-FU leads to an accumulation of cells in S-phase and has been shown to induce p53 dependent apoptosis.

Supplier: SIGMA ALDRICH MICROSCOPY

The release of phosphate or pyrophosphate in an enzymatic reaction can be detected by malachite green and is measured spectrometrically at 660 nm.

Supplier: SIGMA ALDRICH MICROSCOPY

Formvar solution ~1% in 1,2-dichloroethane for microscopy, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Acid Blue 113, Dye content 50 %

Supplier: SIGMA ALDRICH MICROSCOPY

Reactive Orange 16, Dye content ≥70 % (Remazol Brilliant Orange 3R)

Supplier: SIGMA ALDRICH MICROSCOPY

2-(3-Aminophenylsulphonyl)ethanol hydrochloride 97%, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Used as a 'blueing reagent' in hematoxylin and eosin staining procedures. Scott's tap water substitute concentrate has been used in transferase mediated dUTP nick end labeling (TUNEL) assay. It has been used in immunohistochemical analysis.

Supplier: SIGMA ALDRICH MICROSCOPY

Acid yellow-17 (C.I. 18965), also known as Disodium 2, 5-dichloro-4-(5-hydroxy-3-methyl-4-(sulphophenylazo)pyrazol-1-yl) benzenesulphonate, and Yellow 2G is an anionic, reactive textile dye. This synthetic azo dye possesses a stable aromatic structure with SO₃H and OH groups. The applications of Acid yellow-17 are seen in detergent, soap, textile, printing, and cosmetic industries.