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Current Affairs- 10-07-2020, Antigen Testing

Antigen tests seek out specific proteins only found in the virus, which the body’s immune response recognises as 'foreign'. Most COVID-19 antigen tests target the 'spike protein' that studs the surface of the coronavirus. A swab from the nose is collected for this test, where there's a high likelihood of virus particles being present. The swab is then dipped in a solution that inactivates the virus, and then transferred onto a test strip. The test strip houses antibodies that bind to coronavirus proteins and hold them in place as the fluid spreads.

If the sample is positive for coronavirus, colored lines will show up on the paper strip in 15-20 minutes.

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