The humble leech: A doctor’s oldest friendShared by:
The use of medicinal leeches (hirudo medicinalis) throughout the ancient world is common knowledge, seen in ancient Egyptian carvings and it is still being used by doctors today. Technically, the leech is a segmented worm, related to the earthworm, and it can live on land, in freshwater and seawater. Most leeches are predatory, feeding on other invertebrates, but the medicinal leech prefers blood.
6 Sep 2016 - General