Sandwich assay (IMAGE)

University of California - Santa Cruz

Sandwich assay

Caption

The antigen test uses a novel fluorescent probe for optical detection on the chip. This illustration shows the full antigen-capture complex assembled as a sandwich assay on a magnetic bead; a linker on the probe is cleaved with ultraviolet radiation and the probe is released, leaving a single probe per antigen for detection.

Credit

(Image credit: Stambaugh et al., PNAS 2021

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