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en.wikipedia.org/wiki/Hirudo_medicinalis

Hirudo medicinalis, the European medicinal leech, is one of several species of leeches used as "medicinal leeches". Other species of Hirudo sometimes also used as medicinal leeches include H. orientalis, H. troctina, and H. verbana. The Mexican medical leech is Hirudinaria manillensis, and the North ...

en.wikipedia.org/wiki/Leech

Leeches are segmented worms that belong to the phylum Annelida and comprise the subclass ... In modern times, leeches are used medically in procedures such as the reattachment of body parts ... The Branchiobdellida are leechlike clitellates that were formerly included in the Hirudinea, but are just really close relatives.

en.wikipedia.org/wiki/Bloodletting

Bloodletting (or blood-letting) is the withdrawal of blood from a patient to cure or prevent illness and disease. Bloodletting was based on an ancient system of medicine in which blood ... In the overwhelming majority of cases, the historical use of bloodletting was harmful to patients. Today, the .... Leeches could also be used.

sciencenetlinks.com/science-news/science-updates/modern-leeching

In the 1800's, leeches used to be the state-of-the-art medicine. ... blood or the congested blood, until the person can actually grow back small, venous capillaries.

www.pbs.org/wnet/nature/bloody-suckers-leech-therapy/11360

Nov 17, 2002 ... Leeches have been used by physicians since ancient times. ... living mostly in fresh water — have long had a place in the doctor's medical kit.

www.healthline.com/health/what-is-leech-therapy

Apr 21, 2017 ... Leeches have been used in medicine since the beginning of civilization. ... it may very well be that the treatment has even more practical use ...

health.howstuffworks.com/medicine/modern-treatments/leeches-in-modern-medicine.htm

Learn how leeches are used in modern medical treatments. ... worms' sole reason for existing is to make people recoil in disgust at the very sight of them.

news.bbc.co.uk/1/hi/health/3858087.stm

Jul 2, 2004 ... These hungry little Draculas have been used in medicine for centuries ... of blood that the leech actually removes to feed on, making it a very ...

www.ncbi.nlm.nih.gov/pmc/articles/PMC3757849

Actually, the digestion process of blood in hematophagous leeches undergoes many ... The usage of leech for various medical applications can be traced back ...