Hirudin as a novel anticoagulant and antithromotic agent, is a kind of protein that is obtained from the salivary gland secretion of one kind blood-sucking leech.It increases the difficulty extraction and purification of hirudin that composition of no anticoagulant activity of peseudo-hirudin in the body of leech and a large number of complex material from the salivary gland secretion of one kind blood-sucking leech.This article focuses on reviewing the structure of hirudin, genetic makeup, extraction and purification of hirudin according to the related research.Analysis of the pros and cons of various extraction and purification methods.Looking forward to its developing tendency, so as to provide reference for extraction and purification of Hirudin.
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