Abstract:Subgroup A1 and A2 are the most important ones within blood group A. Subgroup A1 has A antigen more than A2 subgroup possesses, while A2 subgroup can cause misidentification of blood group due to its low A antigen content and genetic variation. Misidentification of blood group will increase in the risk of transfusion reactions. This study aims to describe the A1 and A2 subgroup population in Kulon Progo district. Cross sectional sampling technique was applied. Sample were taken from donors of blood group A in … Show more
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