1070 Risultati per: "SIGMA ALDRICH MICROSCOPY"

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Fluorescent diazoalkane useful as an HPLC derivatization reagent for carboxylic acid detection with better detection limit parameters and greater chemical stability than the commonly used 9-anthryldiazomethane.

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1,1,2-Trimethyl-3-(4-sulfobutyl)benz[e]indolium, inner salt, Dye content 90 % (1,1,2-Trimethyl-3-(4-sulfobutyl)-1H-benz[e]indolium hydroxide, inner salt; 1-(4-Sulfobutyl)-2,3,3-trimethyl-4,5-benzindolium, inner salt)

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Verde luce SF, Sigma-Aldrich®

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A highly fluorescent dye, useful in marking nerve cells.

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Acid Fuchsin is mainly used as a diachrome and is part of the connective tissue stains. It also works as a pH indicator.

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Variamine Blue RT Salt has been used as a dye in ultraviolet-visible spectrophotometric method based-uricase enzyme for the detection of uric acid in normal urine. It is also used in combination with naphthol AS-MX phosphate-variam to determine the cytochemical visualization of alkaline phosphatase activity.

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Pinacyanol chloride, (1,1'-Diethyl-2,2'-carbocyanine chloride; 2,2'-Trimethinequinocyanine chloride; Quinaldine blue).

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Verde Fast, Sigma-Aldrich®

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Acriflavine also interacts with HIF-1α (hypoxia-inducible factor 1 α) and HIF-2α, and thereby suppresses dimer formation of HIF-1 and transcriptional function. It also has negative effect on tumor growth and vascularization. Acriflavine also exhibits trypanocidal, antibacterial and antiviral activities.

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Methyl Blue is a triaminotriphenylmethane dye, widely used in paper, textile and leather production.

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Melanin is a ubiquitous and prominent pigment responsible for color of skin, hair and eyes. Melanin is classified into eumelanin and pheomelanin. Eumelanin is black to dark brown pigment and is present in black hair and retina of the eye. Pheomelanin is yellow to reddish brown pigment present is red hair and red feathers. Melanins are high molecular weight pigments synthesised from phenolic or indolic precursors and is widely present in animals, plants and microorganisms.

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May contain minor quantities of precipitated dye.

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Pararosaniline acetate, Dye content 90% (Basic Parafuchsin; Basic Red 9; Magenta(TM) O).

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4-Formylbenzene-1,3-disulfonic acid disodium salt hydrate,97% (Benzaldehyde 2,4-disulfonic acid disodium salt; Sodium 4-formylbenzene-1,3-disulfonate).

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Counting leukocytes in the counting chamber.

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Ematossilina

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4',5'-Dibromofluorescein, Dye content 95 % (Solvent Red 72)

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10% Neutral buffered formalin (NBF) is the most commonly used fixative for light microscopy. 10% NBF is well suited for large throughput laboratories and requires a relatively short period of fixation, but can also be used for the long-term storage of tissue. Formalin fixation is thought to form between the aldehydes and the proteins, creating a gel, thus retaining cellular constituents in their in vivo relationship.

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Arancio G, Sigma-Aldrich®

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This acid alcohol is part of Flourecent Stain Kit for Mycobacteria (Cat. No. 05151). It is used for decolorising.

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Nuclear fast red dye has anthraquinonic nature and is used either alone or in combination with other dyes. It is mainly used for staining of nuclei.

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Morin hydrate is a yellowish pigment and a fluorescent indicator. It is used for the fluorimetric determination of several metals, mostly aluminum. Morin has been utilised in fluorescent microscopy as a fluorescent nuclear stain and as an application to detect aluminium in the brain by demonstrating metal salts.

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Fluoresceina 95% (dye content), Sigma-Aldrich®

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Azure B eosinate, Sigma-Aldrich®

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Inhibits mitochondrial Ca2+ uniporter; capsaicin antagonist; blocks VR1 vanilloid receptor-coupled ion channels.

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1,2,3,3-Tetramethyl-3H-indolium iodide,98%

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Ponceau Xylidine has been used as part of the Goldner’s trichome stain to stain thin sections. It has also been used to prepare Fuchsin-Ponceau solution to stain an amyotrophic lateral sclerosis tissue-engineered

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4-Nitrophthalamide,99%

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Tissues are stained for Gram-positive organisms with crystal violet, mordanted in iodine, decolorized, stained for Gram-negative organisms with safranin O and then counterstained with tartrazine. For delineating Gram-positive and Gram-negative organisms

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4-Nitroguaiacol potassium salt hydrate,98% (2-Methoxy-4-nitrophenol potassium salt)