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leech is a topic covered in the Taber's Medical Dictionary.

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(lēch )

A bloodsucking water worm, belonging to the phylum Annelida, class Hirudinea, parasitic on humans and other animals. Leeches are a source of hirudin, an anticoagulant secreted by their buccal glands. In addition to hirudin, leech saliva contains several active substances including inhibitors of platelet aggregation, that have been synthesized for use as anticoagulants in clotting disorders.
SEE: Annelida; SEE: hirudin; SEE: Hirudinea
Leeches were used as a means of bloodletting, common until the mid-19th century but now almost completely abandoned.

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Venes, Donald, editor. "Leech." Taber's Medical Dictionary, 23rd ed., F.A. Davis Company, 2017. Taber's Online, www.tabers.com/tabersonline/view/Tabers-Dictionary/734779/all/leech.
Leech. In: Venes D, ed. Taber's Medical Dictionary. 23rd ed. F.A. Davis Company; 2017. https://www.tabers.com/tabersonline/view/Tabers-Dictionary/734779/all/leech. Accessed August 18, 2019.
Leech. (2017). In Venes, D. (Ed.), Taber's Medical Dictionary. Available from https://www.tabers.com/tabersonline/view/Tabers-Dictionary/734779/all/leech
Leech [Internet]. In: Venes D, editors. Taber's Medical Dictionary. F.A. Davis Company; 2017. [cited 2019 August 18]. Available from: https://www.tabers.com/tabersonline/view/Tabers-Dictionary/734779/all/leech.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - leech ID - 734779 ED - Venes,Donald, BT - Taber's Medical Dictionary UR - https://www.tabers.com/tabersonline/view/Tabers-Dictionary/734779/all/leech PB - F.A. Davis Company ET - 23 DB - Taber's Online DP - Unbound Medicine ER -