Which reagent is used to identify A1 antigen in typing?

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Multiple Choice

Which reagent is used to identify A1 antigen in typing?

Explanation:
A1 antigen is a specific form of the A antigen, and it is detected using an anti-A1 reagent, which binds selectively to the A1 epitope on red cells. If the cells carry the A1 antigen, anti-A1 will cause visible agglutination, confirming A1. Anti-A2 targets the A2 antigen, not A1, so it wouldn’t identify A1. Dolichos biflorus seeds extract is a lectin that can bind A1 and is sometimes used to distinguish A1 from A2, but the primary reagent to identify A1 antigen in typing is anti-A1.

A1 antigen is a specific form of the A antigen, and it is detected using an anti-A1 reagent, which binds selectively to the A1 epitope on red cells. If the cells carry the A1 antigen, anti-A1 will cause visible agglutination, confirming A1. Anti-A2 targets the A2 antigen, not A1, so it wouldn’t identify A1. Dolichos biflorus seeds extract is a lectin that can bind A1 and is sometimes used to distinguish A1 from A2, but the primary reagent to identify A1 antigen in typing is anti-A1.

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