In the 1860's, London hospitals used seven million medicinal leeches a year.

The same result has followed from keeping together different varieties of the medicinal leech.

The medicinal leech and glow worm have also been found here.

It is host to an large range of plants and animals, including the medicinal leech.

For most Russians, medicinal leeches are not looked upon as exotic or primitive.

Its close resemblance to the medicinal leech caused the mistake to be overlooked until too late.

Interestingly the use of medicinal leeches can be dated back all the way to ancient Egypt.

Leech culture was seen as a solution to growing demand for medicinal leeches throughout the world.

These measures are so effective that a mature medicinal leech does not need to feed more than twice a year.

"They're spagyric larvae - think of them like medicinal leeches.

Note for young visitors: the ponds are home to medicinal leeches, so paddling may not be such a great idea.

Medicinal leeches are specially cultivated in a sterile environment.

The most memorable scene in this episode has to be Oddie trying to attract medicinal leeches.

Medicinal leeches have been found to secrete saliva containing about 60 different proteins.

The medicinal leech has been used since medieval times as a way to remedy a host of illnesses, including fever and inflammation.

To find out, they fed goat blood to 26 medicinal leeches, a catch-all term for various species still used, occasionally, by doctors.

Hirudo orientalis is a species of medicinal leech.

Historically the European medicinal leech, another invertebrate parasite, has been used in medicine to remove blood from patients.

In the 18th century, punctuation marks were as common as medicinal leeches and just about as scientific.

The medicinal leech leaves the water to lay its eggs, which are coated in a spongy protective cocoon.

The cocoon looks like those produced by living leeches, such as the medicinal leech Hirudo medicinalis.

Native hirudin, a 65-amino-acid polypeptide, is produced in the parapharyngeal glands of medicinal leeches.

The general morphology of medicinal leeches follows that of most other leeches.

Brage et al., 1990 recommends fluoroquinolone administration as a prophylactic treatment during medicinal leech application.

"The European medicinal leech is not one species at all," Dr. Siddall said.