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A 2 and A 2 B are rare phenotypes of the ABO blood group system. Some individuals with A 2 and A 2 B may have anti-A 1 antibodies that may be clinically significant or insignificant. The aim of this study was to determine the frequency of A 2 , A 2 B phenotypes and anti-A 1 antibodies in blood donors in Jazan, Saudi Arabia. This study also evaluated the reactivity potential of anti-A 1 antibodies.

international journal of general medicine

&lt;p&gt;Prevalence of A&lt;sub&gt;2&lt;/sub&gt; and A&lt;sub&gt;2&lt;/sub&gt;B Subgroups and Anti-A&lt;sub&gt;1&lt;/sub&gt; Antibody in Blood Donors in Jazan, Saudi Arabia&lt;/p&gt;