What are the three types of haptoglobin?
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3 min read
Haptoglobin (Hp) is an abundant plasma protein that binds to free hemoglobin released from red blood cells. In humans, there are three main types of haptoglobin, known as phenotypes Hp 1-1, Hp 2-1, and Hp 2-2, which result from a genetic polymorphism in the HP gene.
