238885 Results for: "single-use assemblies"

Supplier: MP Biomedicals

Ethidium bromide(EtBr) has been used extensively to reduce mitochondrial DNA copy number in proliferating cells and most commonly used in nucleic acid stain for PAGE or agarose gel electrophoresis. The fluorescence of EtBr increases 21-fold upon binding to double-stranded RNA and 25-fold on binding double-stranded DNA so that destaining the background is not necessary with a low stain concentration (10 μg/mL). Ethidium bromide has been used in a number of fluorimetric assays for nucleic acids. It has been shown to bind to single-stranded DNA (although not as strongly) and triple-stranded DNA.4 Because of its ability to bind to DNA, EtBr is an inhibitor of DNA polymerase. A 10mg/mL easy-to-use solution of ethidium bromide in specially filtered, deionized water which is excellent for nucleic acid electrophoresis and purification applications, eliminates the dust hazard associated with powdered ethidium bromide and saves time spent on weighing and mixing. Used in the fluorometric detection of double stranded nucleic acids in gel electrophoresis. Also acts as an RNA polymerase inhibitor, and in separation of high molecular weight DNA's. It confers a deep red stain to DNA by acting as an intercalating agent between the starch bases. Subsequent fluorescence techniques enable the extraction and characterization of DNA bands. Biochem/physiol Actions: Ethidium bromide intercalates double-stranded DNA and RNA and acts as a frameshift mutagen. It can also be used in conjunction with acridine orange to differentiate between viable, apoptotic and necrotic cells.

Supplier: LGC Standards PROMOCHEM

This solution is intended for use as a certified reference material or calibration standard for the analysis of this element in petroleum products or other organic matrices using x-ray fluorescence (XRF) spectrometry, inductively coupled plasma optical emission spectroscopy (ICPOES), inductively coupled plasma mass spectrometry (ICP-MS), rotating disc electrode atomic emission spectroscopy (RDE-AES), flame or furnace atomic absorption spectroscopy (AA or GFAA), and other techniques for elemental analysis.

Supplier: WTW ONLINE

The special design of the process line electrodes makes them close to optimal in their accuracy, stability, speed and longevity to liquid electrolyte electrodes. For the use in pipelines, they can be installed into the replacement fitting CHEMtrac 830 M.

Supplier: ProSci Inc.

The three mammalian isoforms of TGF-β, TGF-β1, β2, β3, signal through the same receptor and elicit similar biological responses. They are multifunctional cytokines that regulate cell proliferation, growth, differentiation and motility as well as synthesis and deposition of the extracellular matrix. They are involved in various physiological processes including embryogenesis, tissue remodeling and would healing. They are secreted predominantly as latent complexes which are stored at the cell surface and in the extracellular matrix. The release of biologically active TGF-β isoform from a latent complex involves proteolytic processing of the complex and /or induction of conformational changes by proteins such as thrombospondin-1. The physiological role of TGF-β3 is still unknown but its expression pattern suggests a role in the regulation of certain development processes. Recombinant TGF-β3 is a 25.0 kDa protein composed of two identical 112 amino acid polypeptide chains linked by a single disulfide bond.Manufactured using all non-animal reagents.

Supplier: Avantor Fluid Handling

Quick and easy assembly.

Supplier: Avantor Fluid Handling

No tools needed for assembly.

Supplier: Avantor Fluid Handling

No tools needed for assembly.

Supplier: Merck Millipore (Novagen)

The NovaTaq PCR Master Mix is a ready to use 2X concentrated mixture of NovaTaq DNA polymerase, ultra-pure deoxynucleotides, and reaction buffer without magnesium chloride. The master mix simplifies the assembly of PCR reactions and offers advantages of times savings, consistency, and minimal risk of contamination. Simply add the NovaTaq PCR master mix to an equal volume containing the required amount of magnesium chloride, DNA template, and primers, and the reaction is ready for thermal cycling. The final diluted reaction contains 2,5 units of NovaTaq DNA polymerase per 100 µl. Sufficient components are included for 200 standard 50 µl (or 100×100 µl) amplification reactions.

Supplier: Avantor Fluid Handling

Quick and easy assembly.

Supplier: AAT BIOQUEST

Gentamicin is widely used for treating tuberculosis and Gram-negative infections and is particularly useful in neonatal intensive care units. Fluorophore-tagged drugs, such as gentamicin-Texas Red (GTTR) conjugates, have been used to identify drug trafficking routes across the BLB and into hair cells, and specifically in the cochlea - the sensory organ responsible for hearing. Identifying the mechanisms involved in the intracochlear trafficking of ototoxic drugs to hair cells is of fundamental as well as clinical importance. Texas Red-gentamicin conjugate (GTTR) provides researchers a valuable tool to study the cellular uptake, kinetics and distribution of gentamicin through fluorescence techniques, such as fluorescence microscopy, fluorescence correlation spectroscopy, single molecule spectroscopy. The TR fluorophore can be conveniently excited from 500-600 nm, with an emission maximum centered around 610 nm. Acute nephrotoxicity and permanent ototoxicity are serious side-effects that increase patient morbidity, or induce permanent auditory and vestibular deficits. Several approaches have been used to study the intracellular mechanisms induced by ototoxic drugs. However, ototoxic drugs must first cross the blood-labyrinth barrier (BLB) before entering sensory hair cells to exert their cytotoxic effect that leads to hearing loss and deafness. The BLB is similar to the blood-brain barrier (BBB), and is composed of tight junction-coupled endothelial and epithelial barrier layers that transport nutrients and ions from one side of the barrier to the other.

Supplier: Greiner Bio-One

PS, without lid. Microplates in strip format offer the advantage of greater flexibility. Individual strips can be removed from the support frame so that the number of tests to be performed can be adjusted to the number of samples, and is not predetermined by the microplate format used. Strip plates are available with high binding surfaces that display a higher protein binding capacity for polar proteins (MICROLON® 600), medium binding surfaces, which are more hydrophobic and are therefore better suited for non-polar proteins and peptides (MICROLON® 200), black (FLUOTRAC™) or white (LUMITRAC™). These plates are also available with a choice of well profile: C-bottom, U-bottom or F-bottom.

Supplier: Heidolph Instruments GmbH & Co.KG

Multi-channel pump heads, models C4, C8, and C12. Can be used in combination with peristaltic pump drives PD 5001, PD 5101, and PD 5201 with the multi-channel adapter. Up to 12 pump channels can be operated simultaneously. Separate metering to different containers in a single operation.

Supplier: Avantor Fluid Handling

Get the most our of your Masterflex® I/P® Easy-Load® Pump Head with these replacement parts.

Supplier: Avantor Fluid Handling

No tools needed for assembly.

Supplier: Avantor Fluid Handling

Attach directly to your sanitary hardware assemblies!

Supplier: Avantor Fluid Handling

Get the most out of your Masterflex® L/S® Standard Pump Head with these replacement parts.

Supplier: Avantor Fluid Handling

Quick and easy assembly without tools.

Supplier: Avantor Fluid Handling

Quick and easy assembly without tools.

Supplier: VWR Collection

These spare parts are suitable for certain HPLC pumps.

Supplier: HAMILTON BONADUZ

Electrodes for special laboratory applications such as microbiological samples, serum, flat surfaces, small volumes, and samples containing fats and proteins.

Supplier: Avantor Fluid Handling

Quick and easy assembly.

Supplier: MP Biomedicals

This product is the lyophilized powder of horseradish peroxidase (HRP)-conjugated goat IgG fraction to rabbit IgG (whole molecule) and buffer salts. Anti-Human IgG is developed in goat using IgG from pooled normal human serum as the immunogen. Whole antiserum is fractionated and then further purified by ion exchange chromatography to provide the IgG fraction of antiserum. This fraction is essentially free of other goat serum proteins. Specificity for human IgG is determined by immunoelectrophoresis (IEP) versus purified human IgA, IgG, IgM, Bence Jones kappa, and Bence Jones lambda myeloma proteins.Identity and purity of the antibody is established by immunoelectrophoresis (IEP), prior to conjugation. Electrophoresis of the antibody preparation followed by diffusion versus anti-goat IgG and anti-goat whole serum result in single arcs of precipitation in the gamma region.

Supplier: Avantor Fluid Handling

Easy tubing changes—even in tight spaces.

Supplier: Avantor Fluid Handling

Get the most our of your Masterflex® L/S® Easy-Load® II Pump Head with these replacement parts.

Supplier: ProSci Inc.

It recognises an oncofetal glycoprotein with a single chain of 70 kDa, which is identified as alpha fetoprotein (AFP). This mAb is highly specific to AFP and shows no cross-reaction with other oncofetal antigens or serum albumin. The yolk sac and the liver produce AFP during fetal life. AFP expression in adults is often associated with hepatoma or teratoma. However, hereditary persistence of alpha-fetoprotein may also be found in individuals with no obvious pathology. The protein is thought to be the fetal counterpart of serum albumin, and the AFP and albumin genes are present in tandem in the same transcriptional orientation on chromosome 4. AFP is found in monomeric as well as dimeric and trimeric forms, and binds copper, nickel, fatty acids and bilirubin. The level of AFP in amniotic fluid is used to measure renal loss of protein to screen for spinal bifida and anencephaly.

Supplier: ProSci Inc.

CD68 is a single-pass type I membrane protein which belongs to the LAMP family. CD68 is highly expressed by blood monocytes and tissue macrophages. It is also expressed in lymphocytes, fibroblasts and endothelial cells and in many tumour cell lines which could allow them to attach to selectins on vascular endothelium, facilitating their dissemination to secondary sites. CD68 plays a role in phagocytic activities of tissue macrophages, both in intracellular lysosomal metabolism and extracellular cell-cell and cell-pathogen interactions. It is a commonly used marker for macrophages. However, a number of studies have shown that CD68 antibodies react with other hematopoietic and non-hematopoietic cell types, suggesting that CD68 may not be a macrophage-specific antigen. CD68 binds to tissue- and organ-specific lectins or selectins, allowing homing of macrophage subsets to particular sites. Rapid recirculation of CD68 from endosomes and lysosomes to the plasma membrane may allow macrophages to crawl over selectin-bearing substrates or other cells.

Supplier: ProSci Inc.

Recognises a protein of 75 kDa, identified as mu heavy chain of human immunoglobulins. It does not cross-react with alpha (IgA), gamma (IgG), epsilon (IgE), or delta (IgD), heavy chains, T-cells, monocytes, granulocytes, or erythrocytes. Monomeric IgM is expressed as a membrane bound antibody on the surface of B cells and as a pentamer when secreted by plasma cells. IgM antibody is prominent in early immune responses to most antigens. Aberrant levels are associated with immune deficiency states, hereditary deficiencies, myeloma, Waldenstrom's macroglobulinemia, chronic infection and hepatocellular disease. This mAb is useful in the identification of leukemias, plasmacytomas, and certain non-Hodgkins lymphomas. The most common feature of these malignancies is the restricted expression of a single heavy chain class. Demonstration of clonality in lymphoid infiltrates indicates that the infiltrate is clonal and therefore malignant.

Supplier: Avantor Fluid Handling

Get the most out of your Masterflex® L/S® High-Performance Pump Head with these replacement parts.

Supplier: Avantor Fluid Handling

Quick and easy assembly without tools.

Supplier: Avantor

Precision-machined stainless steel nuts and ferrules.