What creature was used for the medical treatment of bloodletting?
Hirudinea Leech infestation Hirudinida Leeches Leeching (medical) External hirudiniasis Hirudiniasis Hirudena Bdellatomy Theromyzon Leech
external hirudiniasis leeches leeching medical leech theromyzon leech infestation hirudinida hirudiniasis hirudena hirudinea bdellatomy
leeches
WikipediaEntity
Leeches