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ELISpot & Fluorospot Products
From research to discovery
Step 1
![ELISpot step 1](https://www.covalab.com/media/wysiwyg/diagrams/elispot_step_1.jpg)
The cytokine-specific capture antibody is coated onto the PVDF-bottomed 96-well microtitre plate (not required for the pre-coated plates).
Step 2
![ELISpot step 2](https://www.covalab.com/media/wysiwyg/diagrams/elispot_step_2.jpg)
The cell suspension is added to the wells and incubated overnight at 37°C in a CO2 incubator, allowing the coated antibody to capture the target cytokine while being secreted.
Step 3
![ELISpot step 3](https://www.covalab.com/media/wysiwyg/diagrams/elispot_step_3.jpg)
The biotinylated cytokine-specific detection antibody binds to the capture cytokine.
Step 4
![ELISpot step 4](https://www.covalab.com/media/wysiwyg/diagrams/elispot_step_4.jpg)
The alkaline phosphatase-conjugated streptavidin binds specifically to biotin.
Step 5
![ELISpot step 5](https://www.covalab.com/media/wysiwyg/diagrams/elispot_step_5.jpg)
The BCIP/NBT substrate is added and turns into coloured spots wich can be quandtified either by an appropriate analysis software or manually by microscopy.
Caption
![Antibody](https://www.covalab.com/media/wysiwyg/icons/antibody_gray.png)
Capture /
Detection
antibody
![Cytokine](https://www.covalab.com/media/wysiwyg/illustrations/proteins/il_1_beta.png)
Cytokine
![T cell](https://www.covalab.com/media/wysiwyg/illustrations/science/t_cell_green.png)
Cytokine-
secreting
cell
![Biotin](https://www.covalab.com/media/wysiwyg/illustrations/miscellaneous/black_sphere.png)
Biotin
![Streptavidin](https://www.covalab.com/media/wysiwyg/illustrations/miscellaneous/green_round_cap.png)
Streptavidin
![Enzyme](https://www.covalab.com/media/wysiwyg/illustrations/proteins/miscellaneous_enzyme.png)
Alkaline
phosphatase