Suppliers
Contact Us
 GENTAUR Europe BVBAVoortstraat 49, 1910 Kampenhout BELGIUM Tel 0032 16 58 90 45 Fax 0032 16 50 90 45 This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. |
GENTAUR BULGARIA
53 Iskar Str. 1191 Kokalyane, Sofia
Tel 0035924682280
Fax 0035929830072
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GENTAUR France SARL
9, rue Lagrange, 75005 Paris
Tel 01 43 25 01 50
Fax 01 43 25 01 60
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GmbH Marienbongard 20
52062 Aachen Deutschland
Tel (+49) 0241 56 00 99 68
Fax (+49) 0241 56 00 47 88 This email address is being protected from spambots. You need JavaScript enabled to view it." style="font-family: Arial, Tahoma, Verdana, Helvetica; line-height: 15.59375px; ">
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GENTAUR Ltd.
Howard Frank Turnberry House
1404-1410 High Road
Whetstone London N20 9BH
Tel 020 3393 8531
Fax 020 8445 9411
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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
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GENTAUR Nederland BV
Kuiper 1
5521 DG Eersel Nederland
Tel 0208-080893
Fax 0497-517897
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GENTAUR SRL IVA IT03841300167
Piazza Giacomo Matteotti, 6, 24122 Bergamo
Tel 02 36 00 65 93
Fax 02 36 00 65 94
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GENTAUR Spain
Tel 0911876558
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Genprice Inc, Logistics
547, Yurok Circle
San Jose, CA 95123
Phone/Fax:
(408) 780-0908
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GENPRICE Inc. invoicing/ accounting:
6017 Snell Ave, Suite 357
San Jose, CA. 96123
Serbia, 
Macedonia,
Montenegro, 
Croatia:
Tel 0035929830070
Fax 0035929830072
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GENTAUR Romania
Tel 0035929830070
Fax 0035929830072
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GENTAUR Greece
Tel 00302111768494
Fax 0032 16 50 90 45
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Other countries
Luxembourg +35220880274
Schweiz Züri +41435006251
Danmark +4569918806
Österreich +43720880899
Ceská republika Praha +420246019719
Ireland Dublin +35316526556
Norge Oslo +4721031366
Finland Helsset +358942419041
Sverige Stockholm +46852503438
Magyarország Budapest +3619980547
ELISA
Enzyme-linked immunosorbent assay (ELISA) is a test that uses antibodies and color change to identify a substance.
ELISA is a popular format of a "wet-lab" type analytic biochemistry assay that uses a solid-phase enzyme immunoassay (EIA) to detect the presence of a substance, usually an antigen, in a liquid sample or wet sample.
The ELISA has been used as a diagnostic tool in medicine and plant pathology, as well as a quality-control check in various industries.
Antigens from the sample are attached to a surface. Then, a further specific antibody is applied over the surface so it can bind to the antigen. This antibody is linked to an enzyme, and, in the final step, a substance containing the enzyme'ssubstrate is added. The subsequent reaction produces a detectable signal, most commonly a color change in the substrate.
Performing an ELISA involves at least one antibody with specificity for a particular antigen. The sample with an unknown amount of antigen is immobilized on a solid support (usually a polystyrene microtiter plate) either non-specifically (viaadsorption to the surface) or specifically (via capture by another antibody specific to the same antigen, in a "sandwich" ELISA). After the antigen is immobilized, the detection antibody is added, forming a complex with the antigen. The detection antibody can be covalently linked to an enzyme, or can itself be detected by a secondary antibody that is linked to an enzyme through bioconjugation. Between each step, the plate is typically washed with a mild detergent solution to remove any proteins or antibodies that are not specifically bound. After the final wash step, the plate is developed by adding an enzymatic substrate to produce a visible signal, which indicates the quantity of antigen in the sample.
Of note, ELISA can perform other forms of ligand binding assays instead of strictly "immuno" assays, though the name carried the original "immuno" because of the common use and history of development of this method. The technique essentially requires any ligating reagent that can be immobilized on the solid phase along with a detection reagent that will bind specifically and use an enzyme to generate a signal that can be properly quantified. In between the washes, only the ligand and its specific binding counterparts remain specifically bound or "immunosorbed" by antigen-antibody interactions to the solid phase, while the nonspecific or unbound components are washed away. Unlike other spectrophotometric wet lab assay formats where the same reaction well (e.g. a cuvette) can be reused after washing, the ELISA plates have the reaction products immunosorbed on the solid phase which is part of the plate, so are not easily reusable.
