Search results for: Rabbit Anti-AACT-Alpha1 Polyclonal Antibody, Biotin Conjugated
#30800246 // Save this To Up
Characterization of Monoclonal and Polyclonal Antibodies Recognizing Prostate Specific Antigen: Implication for Design of a Sandwich ELISA.Prostate cancer is the second most common cancer in men. Prostate-Specific Antigen (PSA) is a tumor-associated glycoprotein with enzymatic activity which is secreted by the prostate gland. Following entry to the blood, 70-90% of PSA forms complexes with protease inhibitors and its enzymatic activity is inhibited. The serum level of PSA is increased and the rate of free PSA (fPSA) to total PSA is decreased in prostate cancer patients. Therefore, measurement of PSA and fPSA in serum is very valuable for diagnosis and prognosis of prostate cancer.
2368 related Products with: Characterization of Monoclonal and Polyclonal Antibodies Recognizing Prostate Specific Antigen: Implication for Design of a Sandwich ELISA.MOUSE ANTI BORRELIA BURGD Human Prostate Specific A PSA (Prostate Specific A PSA (Prostate Specific A PSA (Prostate Specific A PSA (Prostate Specific A PSA (Prostate Specific A PSA (Prostate Specific A MOUSE ANTI BOVINE ROTAVIR Viral antibodies: anti-H RABBIT ANTI GSK3 BETA (pS 10x ELISA WASH BUFFER, Pr
#26248424 // Save this To Up
[Establishment and evaluation of methods for determinating cystic fibrosis transmembrane conductance regulator quantitatively].To establish and evaluate a BA-ELISA method for the quantitative detection of cystic fibrosis transmembrane conductance regulator (CFTR) protein.
2164 related Products with: [Establishment and evaluation of methods for determinating cystic fibrosis transmembrane conductance regulator quantitatively].Cellufine Formyl , 50 ml Cellufine Formyl Media Cellufine Formyl , 500 ml Cellufine Formyl Media Cellufine Formyl Media Formalin Solution (20%) Formalin Solution (20%) Formalin Solution (20%) Formalin (10% Neutral Bu Formalin (10% Neutral Bu Zinc Formalin Solution Zinc Formalin Solution
#24931549 // Save this To Up
A heterogeneous biotin-streptavidin-amplified enzyme-linked immunosorbent assay for detecting tris(2,3-dibromopropyl) isocyanurate in natural samples.Tris(2,3-dibromopropyl) isocyanurate (TBC) is a novel brominated flame retardant (BFR) that is widely used to substitute the prohibited BFRs throughout the world. With the development of research, the potential environmental and ecological harms of TBC have been revealed. For sensitive and selective detecting TBC, an indirect competitive biotin-streptavidin-amplified enzyme-linked immunosorbent assay (BA-ELISA) has been established in this study. The small molecular TBC-hapten was synthesized first; it mimicked the chemical structure of TBC and possessed a secondary amine group. The as-obtained hapten was then conjugated with carrier proteins to prepare artificial antigen. After immunization, the anti-TBC polyclonal antibody was obtained from separating rabbit serum. The procedures of this BA-ELISA were optimized. Under the optimal conditions, the limit of detection (IC10) was 0.0067 ng/ml and the median inhibitory concentration (IC50) was 0.66 ng/ml. Cross-reactivity values of the BA-ELISA with the tested TBC analogues were ⩽5%. This immunoassay was successfully applied to determine the TBC residue in river water samples that were collected near a BFR manufacturing plant. Satisfactory recoveries (92.1-109.2%) were obtained. The results indicated that this proposed BA-ELISA is suitable for the rapid and sensitive determining of TBC in environmental monitoring.
1195 related Products with: A heterogeneous biotin-streptavidin-amplified enzyme-linked immunosorbent assay for detecting tris(2,3-dibromopropyl) isocyanurate in natural samples.Alkaline Phospatase (ALP) Directed In Vivo Angiogen Cultrex 96 Well Laminin I Cultrex 96 Well Collagen Cultrex 96 Well Collagen Cultrex96 Well 3D BME Cel Annexin V Biotin Reagent1 Annexin V Biotin Reagent1 Amplite™ Fluorimetric H Amplite™ Intracellular Amplite™ Fluorimetric P Amplite™ Fluorimetric A
#23833764 // Save this To Up
Electrochemical immunoassay for Salmonella Typhimurium based on magnetically collected Ag-enhanced DNA biobarcode labels.We describe a sensitive electrochemical immunoassay for Salmonella enterica serovar Typhimurium, a common foodborne pathogen which can cause infection at extremely small doses. The assay is based on the recognition of DNA biobarcode labels by differential pulse anodic stripping voltammetry (DPASV), following Ag enhancement. The biobarcodes consist of latex spheres (mean diameter 506 nm ± 22 nm) modified by ferromagnetic Fe3O4 particles. Each biobarcode is loaded by adsorption with approx. 27 molecules of mouse monoclonal antibody against S. Typhimurium and 3.5 × 10(5) molecules of 12 mer ssDNA. The assay is performed by adding the biobarcode, S. Typhimurium cells, and biotin-conjugated rabbit polyclonal antibody against Salmonella into well plates. After antigen-antibody binding, magnetic collection enables the excess polyclonal antibody to be washed off. Exposure to avidin-coated screen printed electrodes, and formation of the avidin-biotin bond, then enables the excess biobarcode to be removed. The biobarcode remaining on the electrode is quantified by DPASV measurement of Ag(+) ions following catalytic Ag deposition. The assay showed a negligible response to 10(7) CFU mL(-1)E. coli and had a limit of detection of 12 CFU mL(-1) in buffer, and 13 to 26 CFU mL(-1) for heat-killed and whole cell S. Typhimurium in plain milk, green bean sprouts and raw eggs. To the best of our knowledge, this is the lowest reported limit of detection for Salmonella by an electrochemical immunoassay not requiring sample pre-enrichment.
2078 related Products with: Electrochemical immunoassay for Salmonella Typhimurium based on magnetically collected Ag-enhanced DNA biobarcode labels.Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty Rabbit Anti-Salmonella ty
#21406139 // Save this To Up
Participation of the 39-kDa glycoprotein (gp39) of the vitelline envelope of Bufo arenarum eggs in sperm-egg interaction.The acquisition of egg fertilizability in Bufo arenarum takes place during the oviductal transit and during this process the extracellular coelomic envelope (CE) of the eggs is converted into the vitelline envelope (VE). It has been stated that one of the necessary events leading to a fertilizable state is the proteolytic cleavage of CE glycoproteins in the oviductal pars recta by oviductin, a serine protease. Consequently, there is a marked increase in the relative quantity of glycoproteins with 39 (gp39) and 42 kDa (gp42) in the VE. In the present study, sperm-VE binding assays using heat-solubilized biotin-conjugated VE glycoproteins revealed that both gp39 and gp42 have sperm binding capacity. According to this result, our study was focused on gp39, a glycoprotein that we have previously reported as a homologue of mammalian ZPC. For this purpose, rabbit polyclonal antibodies against gp39 were generated at our laboratory. The specificity of the antibodies was confirmed with western blot of VE glycoproteins separated on SDS-PAGE. Immunohistochemical and immunoelectron studies showed gp39 distributed throughout the width of the VE. In addition, immunofluorescence assays probed that gp39 bound to the sperm head. Finally, as an approach to elucidate the possible involvement of gp39 in fertilization, inhibition assays showed that pretreatment of eggs with antibodies against gp39 generated a significant decrease in the fertilization rate. Therefore, our findings suggest that gp39, which is modified by oviductal action, participates as a VE glycoprotein ligand for sperm in Bufo arenarum fertilization.
1428 related Products with: Participation of the 39-kDa glycoprotein (gp39) of the vitelline envelope of Bufo arenarum eggs in sperm-egg interaction.Thermal Shaker with cooli FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu Ofloxacin CAS Number [824 Multiple organ tumor tiss MultiGene Gradient therm BACTERIOLOGY BACTEROIDES TCP-1 theta antibody Sour
#16183151 // Save this To Up
Folic acid reduces adhesion molecules VCAM-1 expession in aortic of rats with hyperhomocysteinemia.To investigate effects of supplementation of folic acid on the expression of adhesion molecules VCAM-1 in the aortas of rats with hyperhomocysteinemia. Thirty male SD rats (200 +/- 20 g) were invided into 3 groups (n = 10 for each group): control group(Control), high Met group(Met) and Met plus Folate group(Met + Folate), fed. for 45 days. Plasma Hcy levels were higher with the high-methionine diet (140.68 +/- 36.87 micromol/L vs 6.47 +/- 1.10 micromol/L in control rats) an effect which was reduced by folate. Respectively, the aortic expression of adhesion molecules VCAM-1 at protein and mRNA levels were higher in the Met groups than those in the control groups or the Met + Folate groups. A high methionine diet for 45 days was sufficient to induce hyperhomocysteinemia. Folate supplementation prevented elevation of Hcy levels in the blood, and reduced expression of the adhesion molecule VCAM-1. Hyperhomocysteinemia is now regarded as one of the important risk factors for cardiovascular and cerebralvascular disorders.[Welch GN, Loscalzo J. Homocysteine and atherothrombosis. N Engl J Med 1998; 38(15):1042-50.] Several plausible mechanisms for Hcy-induecd atherosclerosis have been proposed. These include endothelial dysfunction, enhancement of oxidative stress, reduction in NO bioavailability, and augmentation of thrombus formation.[Holven KB, Holm T, Aukrust P, et al. Effect of folic acid treatment on endothelium-dependent vasodilation and nitric oxide-derived end products in hyperhomocysteinemic subjects . Am J Med 2001;110(7):536-42; Guba SC, Fonseca V, Fink LM. Hyperhomocysteinemia and thrombosis. Semin Thromb Hemost 1999;25(3):291-309.] However, the precise molecular mechanism is still unclear. Recent reports have suggested a role for inflammatory processes in the pathogenesis of atherosclerosis.[Gerard C, Rollins BJ. Chemokines and disease. Nat Immunol 2001;2(2):108-15.] Dysfunction of endothelial cells is the key process promoting inflammatory reactions. On injury, endothlial cells are capable of producing various cytokines that participate in inflammatory reactions in the arterial wall. Although results from in vitro studies suggest that Hcy, at pathophysiological concentrations, stimulates chemokine expression in vascular cells, it is unknown whether hyperhomocysteinemia can initiate similar changes, leading to enhanced momocyte adhesion/binding to the vascular endothelium in vivo.[Zeng X, Dai J, Remick DG, Wang X. Homocysteine mediated expression and secretion of monocyte chemoattractant protein-1 and interleukin-8 in human monocytes. Circ Res 2003;93(4):311-20.] On the basis of the potential pathogenic role of chemokines in atherogenesis, the objective of the present study was to investigate that homocsteine may exert its effect in part though adhesion molecules VCAM-1 and that folic acid supplementation may downregulate these inflammatory responses. Male Sprague-Dawley rats (bred from animal centers of Tongji Medical College, Huazhong Science and Technology University) aged 8 weeks were divided into 3 groups(n=10 for each group) and maintained for 45 days on the following diets before the experiments: (1) regular diet; (2) high-metheionine diet, consisting of regular diet plus 1.7% methionine; and (3) high-methionine plus folate -rich diet, consisting of regular diet plus 1.7% methionine and 0.006% folate.[Boisvert WA, Curtiss LK, Terkeltaub RA. Interleukin-8 and its receptor CXCR2 in atherosclerosis. Immunol Res 2000;21(2-3):129-d37.] Plasma and serum samples wee colleced and stored at -80 degrees C after 45 days until analysis. The plasma homocysteine concentration of rats in three groups were determined by high-pressue liquid chromatography. To detect the endothelial expression of adhesion molecules VCAM-1, the thoracic aorta was isolated and dived into segments. These segments were immersion-fixed in 10% neutral-buffered formalin overlight and then embedded in paraffin. Sequential 5 mum paraffin-embedded cross sections were prepared. Immunohistochemical analyisis was performed to detect vascular cell adhesion molecule(VCAM)-1, The fixed cryosections were immediately blcked in 10% horse serum and phosphate baffered saline(PBS) at room temperature for 30 min. Goat polyclonal andibodies against rat VCAM-1(Santa Cruz Biotechnology) were diluted 1:100 in PBS and incubated with the cryosections for 1 h of room temperature. After three washes, the sections were incubated with biotin-conjugated rabbit anti-goat immunoglobulins(Dako) at 1:250 dilution in PBS. After three washes, the samples were mounted in 90% glycerol-PBS. Photographs were taken by use of a light microscope at a mignification of x200.
2659 related Products with: Folic acid reduces adhesion molecules VCAM-1 expession in aortic of rats with hyperhomocysteinemia.(1S,3S)-1-(1,3-Benzodioxo (1R,3S)-1-(1,3-Benzodioxo Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3 Rabbit Anti-IAA (Indole-3
#15713553 // Save this To Up
Improved ELISA test for determination of potency of Inactivated Poliovirus Vaccine (IPV).An improved ELISA test for determination of potency of Inactivated Poliovirus Vaccine (IPV) is proposed. The method is based on the use of IgG purified from immune rabbit serum conjugated with biotin. Optimized and validated materials for the test can be stored for a long time in the form of ready-to-use kits. Optimization included selection of anti-poliovirus rabbit antibody batches with the best specificity to D-antigen as well as finding the most efficient parameters for all steps of ELISA protocol. The assay is based on direct ("sandwich") ELISA scheme, in which antigens are captured on ELISA plates coated with purified rabbit polyclonal D-antigen specific IgG raised against wild polioviruses of three serotypes. D-antigen specificity of the IgG was at least 10 times higher than to H-antigen (heat-inactivated virus). The presence of antigen was detected using biotin-conjugated IgG from the same source. Eight-point dose-response curves were obtained for each sample and the reference vaccine. The protocol ensured low background (less than 0.2 OD), linear response over the entire range of optical density measurements (up to 3.0 OD), and high precision of data (assay variability was about 3%). The quantitative results and the validity of the test were determined by two numerical approaches, linear regression and a new analysis procedure called the local interpolation method. For the first approach we also proposed a new method for testing of parallelism of regression lines. The ELISA protocol for all three types of poliovirus is based on standard off-the-shelf reagents, and is highly reproducible and reliable. An in-house Reference Reagent was formulated and calibrated against the International Reference for IPV.
1957 related Products with: Improved ELISA test for determination of potency of Inactivated Poliovirus Vaccine (IPV).OMNICON® ZONE READER SYS Human Beta 2 microglobuli Human IgG (total) ELISA K Beta Amyloid (42) ELISA K Beta Amyloid (42) ELISA K Human CETP ELISA Kit Wako Human CETP ELISA Kit Wako Beta Amyloid (1 40) ELISA Beta Amyloid (1 40) ELISA Beta Amyloid (40) ELISA K Beta Amyloid (40) ELISA K Beta Amyloid (40) ELISA K
#15237938 // Save this To Up
Synthesis of haptens and development of an immunoassay for the olive fruit fly pheromone.An enzyme-linked immunosorbent assay (ELISA) for the olive fruit fly pheromone, Bactrocera oleae Gmelin, was developed. The assay uses polyclonal antibodies, raised in rabbits, against (+/-)-beta-[3-(1,7-dioxaspiro[5.5]undecane)]propionic acid, 2 (hapten I), conjugated to the KLH (keyhole limpet hemocyanin) by the carbodiimide method. A second hapten, (+/-)-delta-[3-(1,7-dioxaspiro[5.5]undecane)]butylamine, 3 (hapten II), after conjugation to a biotin moiety, was used for indirect immobilization onto ELISA microwells precoated with the glycoprotein avidin. The developed ELISA method measures the synthetic olive fruit fly pheromone in concentrations ranging between 0.08 and 10 microg/mL and shows great promise for practical applications for pheromone detection in environmental and biological samples. The results obtained strongly indicate that this technique, to our knowledge the first insect pheromone enzyme-linked immunosorbent assay so far reported, is a fast, sensitive, inexpensive, and highly convenient method for the analysis of a volatile and low molecular weight compound such as 1,7-dioxaspiro[5.5]undecane, 1.
1439 related Products with: Synthesis of haptens and development of an immunoassay for the olive fruit fly pheromone.MOUSE ANTI BOVINE ROTAVIR Androgen Receptor (Phosph Androgen Receptor (Phosph Rabbit Anti-Human Androge Rabbit Anti-Human Androge MOUSE ANTI BORRELIA BURGD Androgen Receptor (Ab 650 succinate-CoA ligase, GDP TCP-1 theta antibody Sour formin-like 1 antibody So succinate-CoA ligase, ADP Primary antibody Caspase
#15020090 // Save this To Up
Dual enhancement of triple immunofluorescence using two antibodies from the same species.Triple immunofluorescence method with two mouse monoclonal antibodies and another rabbit polyclonal antibody was established with catalyzed reporter deposition (CARD) amplification on thick floating sections from the rat cerebellum. One of the monoclonal antibodies (anti-calbindin), diluted maximally, probed with anti-mouse IgG-horseradish peroxidase (HRP) and amplified with Cy5-conjugated tyramide, immunolabeled cerebellar Purkinje cells and their arborization. Subsequently, a rabbit polyclonal IgG (anti-glial fibrillary acidic protein (anti-GFAP)), probed with anti-rabbit IgG-HRP, amplified with biotin-tyramide and visualized with fluorescein-isothiocyanate (FITC)-streptavidin, immunolabeled Bergmann's glia. Another mouse monoclonal IgG (anti-SNAP25), probed with anti-mouse IgG-rhodamine without CARD amplification, selectively visualized synaptic sites, because the maximal dilution of the other monoclonal antibody (anti-calbindin) was below the detection threshold of this anti-mouse IgG-rhodamine. Separation of the two signals (calbindin and SNAP25), each detected through mouse monoclonal antibody, was then based on the difference of sensitivity either with or without CARD amplification. Triple immunofluorescence is possible when just one of the three primary antibodies is from different species. Intensification of two of the three signals provides further advantages to examine immunolocalization of multiple epitopes on histological sections.
2631 related Products with: Dual enhancement of triple immunofluorescence using two antibodies from the same species.TCP-1 theta antibody Sour Anti-SARS Spike Protein I Mouse Anti-SARS Nucleocap Mouse Anti-SARS Spike IgG Anti-SARS Nucleocapsid Pr Rat Anti-CCT theta Antibo Rabbit Anti-Theophylline Sheep Anti-Theophylline 3 Goat Anti-Human Dual oxid Mouse monoclonal anti-fla Multiple organ cancer tis Multiple organ tumor tiss
#12872222 // Save this To Up
Simultaneous trichromatic fluorescence detection of proteins on Western blots using an amine-reactive dye in combination with alkaline phosphatase- and horseradish peroxidase-antibody conjugates.Three-color fluorescence detection methods are described based upon covalently coupling the dye 2-methoxy-2,4-diphenyl-2(2H)-furanone (MDPF) to proteins immobilized on poly(vinylidene difluoride) (PVDF) membranes, followed by detection of target proteins using alkaline-phosphatase-conjugated reporter molecules in combination with the fluorogenic substrate 9H-(1,3-dichloro-9,9-dimethylacridin-2-one-7-yl) phosphate (DDAO-phosphate) as well as horseradish peroxidase-conjugated reporter molecules in combination with the new fluorogenic substrate Amplex Gold reagent. This results in all proteins in the profile being visualized as fluorescent blue signal, those detected specifically with the alkaline phosphatase conjugate appearing as fluorescent red signal and those detected specifically with the horseradish peroxidase conjugate appearing as fluorescent yellow signal. Using conventional secondary antibodies, two different targets may be identified as long as primary antibodies generated from two different species are used in the analysis. However, Zenon antibody labeling technology eliminates this restriction, permitting the simultaneous use of two different mouse monoclonal antibodies or two different rabbit polyclonal antibodies in the same electroblotting experiment. The trichromatic detection system is broadly compatible with UV epi-illuminators combined with photographic or charge-coupled device (CCD) cameras, and xenon-arc sources equipped with appropriate excitation/emission filters. Alternatively, the enzyme conjugates may be detected using a laser-based gel scanner. The trichromatic method permits detection of low nanogram amounts of protein and allows for unambiguous identification of two different target proteins relative to the entire protein profile on a single electroblot, precluding any requirement for running replicate gels that would otherwise require separate visualization of total proteins and subsequent alignment with multiple chemiluminescent or colorimetric signals generated on different electroblots.
2825 related Products with: Simultaneous trichromatic fluorescence detection of proteins on Western blots using an amine-reactive dye in combination with alkaline phosphatase- and horseradish peroxidase-antibody conjugates.alkaline phosphatase (int MarkerGeneTM TAMRA Antibo Monoclonal Anti-Alkaline Alkaline Phosphatase anti Alkaline Phosphatase anti Alkaline Phosphatase anti Alkaline Phosphatase anti Amplite™ Fluorimetric A alkaline phosphatase (liv Alkaline Phospatase (ALP) Rabbit Anti-FGF3 Oncogene Anti-Avidin peroxidase co
Voortstraat 49, 1910 Kampenhout BELGIUM
Tel 0032 16 58 90 45 Fax 0032 16 50 90 45
9, rue Lagrange, 75005 Paris
Tel 01 43 25 01 50 Fax 01 43 25 01 60
52062 Aachen Deutschland
Tel 0241 40 08 90 86 Fax 0241 55 91 05 36
Howard Frank Turnberry House
1404-1410 High Road
Whetstone London N20 9BH
Tel 020 3393 8531 Fax 020 8445 9411
Schweiz Züri +41435006251
Česká republika Praha +420246019719
Ireland Dublin +35316526556
Norge Oslo +4721031366
Finland Helsset +358942419041
Sverige Stockholm +46852503438
Ελλάς Αθήνα +302111768494
Magyarország Budapest +3619980547
GENTAUR Poland Sp. z o.o.
ul. Grunwaldzka 88/A m.2
81-771 Sopot, Poland
Tel 058 710 33 44
Fax 058 710 33 48
GENTAUR Nederland BV
5521 DG Eersel Nederland
Tel 0208-080893 Fax 0497-517897
Piazza Giacomo Matteotti, 6, 24122 Bergamo
Tel 02 36 00 65 93 Fax 02 36 00 65 94
53 Iskar Str. 1191 Kokalyane, Sofia