Webster's Online Dictionary
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Common Expressions: HEMOGLOBIN A2

ExpressionsDefinition
Hemoglobin A2Hemoglobin A2 is a normal variant of hemoglobin A that consists of two alpha and two delta chains and is found in small quantity in normal human blood. (references)

Source: compiled by the editor from various references; see credits.

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Specialty Expressions: HEMOGLOBIN A2

ExpressionsDomainDefinition
Hemoglobin A2HealthAn adult hemoglobin component normally present in hemolysates from human erythrocytes in concentrations of about 3%. The hemoglobin is composed of two alpha chains and two delta chains. The percentage of HbA2 varies in some hematologic disorders, but is about double in beta-thalassemia. (references)

Source: compiled by the editor from various references; see credits.

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