No. Partial plates are not recommended. Sterility will be an issue if wells are left empty for one ELISpot, then used in a following ELISpot Assay.

Yes. Briefly, block the plate as described in the protocol and aspirate the block. Place plate in a vacuum oven at 30 degrees C for 1 hour. Store the dried plates in a ziplock bag at 4 degrees C with a desiccant. The plates are good stored in this manner for 1 week. Prior to adding cells, fill all the wells with sterile culture media and incubate for approx. 20 minutes. Aspirate and add cells. Alternatively, if there is no vacuum oven available, block the plate, aspirate the block. Add a volume of PBS to each well. Cover the plate and store at 4 degrees C for a maximum of 2 days. Condition with cell cuture media as described above before adding cells.

Yes. Adherent cells wonÆt block the detection of antigen. We advise the preparation of different cell dilutions. If excessive numbers of cells are used, the spots will overlap.

Both assays employ the quantitative sandwich enzyme-linked immunosorbent assay technique. In an ELISA you measure the concentration of protein (ng or pg/mL) already secreted by the cell into your matrix (serum, plasma, conditioned media, etc.). In an ELISpot, you are culturing the cells in the plate and the immobilized capture antibody in the immediate vicinity of the secreting cell binds the protein of interest. The sites of cytokine localization are visualized using a colored, precipitating substrate rather than a soluble substrate as employed in an ELISA.

The number of cells required to achieve optimum results depends on a number of variables. The variables to take into account are cell size, type of cell, number of secreting cells, and the method of stimulation. We recommend cell dilutions from 10,000,000 to 10,000 cells/well.

There are 96 wells in a plate. 12 wells are required for positive/negative/background and detection controls. This will leave 88 wells, sufficient for 44 samples in duplicate.

ELISpot is an abbreviation for Enzyme Linked Immunospot Assay. A capture antibody specific for the protein of interest is coated onto a membrane. Cells are added. After an incubation period, the protein secreted from the cells is detected using a biotinylated antibody specific for a different epitope of the protein. Using a SA-AP conjugate followed by the chromogen BCIP/NBT, a colorimetric image of the antigen secreting cells is revealed. The number of antigen secreting cells can be quantified using an automated ELISpot plate reader or manually using a stereomicroscope.

Environmental stewardship is important to all of the employees at R&D Systems. R&D Systems has actively looked into "green" options several times over the past 20 years or more. First and foremost the energy that it takes to ship back the Styrofoam box is more detrimental to the environment than having the facility re-use it or recycle it locally. In light of that information, we have chosen to reduce the use of styrofoam as much as possible by: 1) Doing extensive stability testing in order to determine which products can be shipped with minimal packaging at ambient temperatures. 2) Converting the use of non-recyclable plastic or Styrofoam packaging material to cardboard, or recyclable or biodegradable materials. 3) Continuing to investigate the alternatives to dry ice shipments, the use of re-usable containers, and gel packs that allow for smaller styrofoam containers. Employees were key to initiating a recycling program at our facilities. Internally we recycle paper, plastic, cardboard, aluminum, glass and Styrofoam. We feel the environmental impact of having recyclable materials returned for reuse is much greater than our current practice. We feel it is best to encourage our customers to implement a recycling program locally and we can identify a recycling center for Styrofoam nearest their facility.

Complete ELISpot kits are ready-to-run, and require no assay development or refinement. ELISpot Development Modules contain matched antibodies for the development of a working assay. Additional supplies are required and assay development expertise is recommended. Complete Kit Components * Coated PVDF-backed 96-well Microplate * Detection Antibody * Streptavidin-AP * BCIP/NBT * Positive Control * Dilution Buffers * Wash Buffer ELISpot Development Modules The analyte-specific ELISpot Development Modules and the ELISpot Blue Color Module contain the necessary components for analyte detection and visualization, respectively. These modules can be used together but are sold separately. Each module contains enough reagents for at least 5 96-well microplates. ELISpot Development Module Contents * Capture Antibody Concentrate * Detection Antibody Concentrate ELISpot Blue Color Module Contents * Streptavidin-AP * BCIP/NBT

No. Partial plates are not recommended. Sterility will be an issue if wells are left empty for one ELISpot, then used in a following ELISpot Assay.

Yes. Adherent cells wonÆt block the detection of antigen. We advise the preparation of different cell dilutions. If excessive numbers of cells are used, the spots will overlap.

Both assays employ the quantitative sandwich enzyme-linked immunosorbent assay technique. In an ELISA you measure the concentration of protein (ng or pg/mL) already secreted by the cell into your matrix (serum, plasma, conditioned media, etc.). In an ELISpot, you are culturing the cells in the plate and the immobilized capture antibody in the immediate vicinity of the secreting cell binds the protein of interest. The sites of cytokine localization are visualized using a colored, precipitating substrate rather than a soluble substrate as employed in an ELISA.

There are 96 wells in a plate. 12 wells are required for positive/negative/background and detection controls. This will leave 88 wells, sufficient for 44 samples in duplicate.

ELISpot is an abbreviation for Enzyme Linked Immunospot Assay. A capture antibody specific for the protein of interest is coated onto a membrane. Cells are added. After an incubation period, the protein secreted from the cells is detected using a biotinylated antibody specific for a different epitope of the protein. Using a SA-AP conjugate followed by the chromogen BCIP/NBT, a colorimetric image of the antigen secreting cells is revealed. The number of antigen secreting cells can be quantified using an automated ELISpot plate reader or manually using a stereomicroscope.

Yes. Briefly, block the plate as described in the protocol and aspirate the block. Place plate in a vacuum oven at 30 degrees C for 1 hour. Store the dried plates in a ziplock bag at 4 degrees C with a desiccant. The plates are good stored in this manner for 1 week. Prior to adding cells, fill all the wells with sterile culture media and incubate for approx. 20 minutes. Aspirate and add cells. Alternatively, if there is no vacuum oven available, block the plate, aspirate the block. Add a volume of PBS to each well. Cover the plate and store at 4 degrees C for a maximum of 2 days. Condition with cell cuture media as described above before adding cells.

Yes. Adherent cells wonÆt block the detection of antigen. We advise the preparation of different cell dilutions. If excessive numbers of cells are used, the spots will overlap.

The grade of the BSA used has been found to be a critical component for running a successful ELISA. We suggest the a BSA with a minimum purity of 98% such as Catalog # 82-045 from Serological Proteins. Additionally, we now offer the same BSAs used in development of the DuoSet as accessory reagents. DY995 Reagent Diluent Concentrate 2 5 x 21 mL vials DY997 Reagent Diluent Concentrate 1 1 x 21 mL vial Refer to package insert for selection of the appropriate Diluent Concentrate or contact Technical Service.

ELISpot is an abbreviation for Enzyme Linked Immunospot Assay. A capture antibody specific for the protein of interest is coated onto a membrane. Cells are added. After an incubation period, the protein secreted from the cells is detected using a biotinylated antibody specific for a different epitope of the protein. Using a SA-AP conjugate followed by the chromogen BCIP/NBT, a colorimetric image of the antigen secreting cells is revealed. The number of antigen secreting cells can be quantified using an automated ELISpot plate reader or manually using a stereomicroscope.

Complete ELISpot kits are ready-to-run, and require no assay development or refinement. ELISpot Development Modules contain matched antibodies for the development of a working assay. Additional supplies are required and assay development expertise is recommended. Complete Kit Components * Coated PVDF-backed 96-well Microplate * Detection Antibody * Streptavidin-AP * BCIP/NBT * Positive Control * Dilution Buffers * Wash Buffer ELISpot Development Modules The analyte-specific ELISpot Development Modules and the ELISpot Blue Color Module contain the necessary components for analyte detection and visualization, respectively. These modules can be used together but are sold separately. Each module contains enough reagents for at least 5 96-well microplates. ELISpot Development Module Contents * Capture Antibody Concentrate * Detection Antibody Concentrate ELISpot Blue Color Module Contents * Streptavidin-AP * BCIP/NBT

No. Partial plates are not recommended. Sterility will be an issue if wells are left empty for one ELISpot, then used in a following ELISpot Assay.

Yes. Adherent cells wonÆt block the detection of antigen. We advise the preparation of different cell dilutions. If excessive numbers of cells are used, the spots will overlap.

Both assays employ the quantitative sandwich enzyme-linked immunosorbent assay technique. In an ELISA you measure the concentration of protein (ng or pg/mL) already secreted by the cell into your matrix (serum, plasma, conditioned media, etc.). In an ELISpot, you are culturing the cells in the plate and the immobilized capture antibody in the immediate vicinity of the secreting cell binds the protein of interest. The sites of cytokine localization are visualized using a colored, precipitating substrate rather than a soluble substrate as employed in an ELISA.

There are 96 wells in a plate. 12 wells are required for positive/negative/background and detection controls. This will leave 88 wells, sufficient for 44 samples in duplicate.

ELISpot is an abbreviation for Enzyme Linked Immunospot Assay. A capture antibody specific for the protein of interest is coated onto a membrane. Cells are added. After an incubation period, the protein secreted from the cells is detected using a biotinylated antibody specific for a different epitope of the protein. Using a SA-AP conjugate followed by the chromogen BCIP/NBT, a colorimetric image of the antigen secreting cells is revealed. The number of antigen secreting cells can be quantified using an automated ELISpot plate reader or manually using a stereomicroscope.

Complete ELISpot kits are ready-to-run, and require no assay development or refinement. ELISpot Development Modules contain matched antibodies for the development of a working assay. Additional supplies are required and assay development expertise is recommended. Complete Kit Components * Coated PVDF-backed 96-well Microplate * Detection Antibody * Streptavidin-AP * BCIP/NBT * Positive Control * Dilution Buffers * Wash Buffer ELISpot Development Modules The analyte-specific ELISpot Development Modules and the ELISpot Blue Color Module contain the necessary components for analyte detection and visualization, respectively. These modules can be used together but are sold separately. Each module contains enough reagents for at least 5 96-well microplates. ELISpot Development Module Contents * Capture Antibody Concentrate * Detection Antibody Concentrate ELISpot Blue Color Module Contents * Streptavidin-AP * BCIP/NBT