Human IL-12/IL-23 p40 ELISpot Kit

This ELISpot assay employs a capture antibody specific for human IL-12/IL-23 p40, pre-coated onto a PVDF-backed microplate. Appropriately stimulated cells are pipetted directly into the wells and the immobilized antibody in the immediate vicinity of the secreting cells binds secreted human IL-12/IL-23 p40. Following wash steps and incubation with a biotinylated detection antibody, alkaline-phosphatase conjugated to streptavidin is added. Unbound enzyme is subsequently removed by washing and a substrate solution (BCIP/NBT) is added. A blue-black colored precipitate forms at the sites of cytokine localization and appears as spots, with each individual spot representing an individual human IL-12/IL-23 p40 secreting cell. The spots can be counted with an automated ELISpot reader system or manually using a stereomicroscope.

Product Features for Human IL-12/IL-23 p40 ELISpot Kit

• Detect and quantitate individual cells secreting human IL-12/IL-23 p40
• High sensitivity - ELISpot assays can measure responses with frequencies well below 1 in 100,000 cells
• No in vitro expansion of cells required
• High-throughput - ELISpot assays use only a small number of primary cells

Kit Contents for Human IL-12/IL-23 p40 ELISpot Kit

• Human IL-12/IL-23 p40 Microplate
• Biotinylated Detection Antibody
• Streptavidin conjugated to Alkaline Phosphatase
• Dilution Buffers
• Wash Buffer Concentrate
• BCIP/NBT Chromogen
• Human IL-12/IL-23 p40 Positive Control

Other Reagents Required

• Pipettes and pipette tips
• Deionized or distilled water
• Squirt bottle, manifold dispenser, or automated microplate washer
• 500 mL graduated cylinder
• 37 °C CO₂ incubator
• Sterile culture media
• Dissection microscope or an automated ELISpot reader