What is the difference between A1 and A2 antigens? Understanding Blood Group Subtypes
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3 min read
While roughly 80% of individuals with type A blood are classified as A1, the remaining 20% are typically A2. The key **difference between A1 and A2 antigens** lies in their quantitative expression and qualitative structure, which affects how they react in blood typing and can be clinically significant in specific medical scenarios.
