How bacteria keep us healthy

(PhysOrg.com) -- Joerg Graf is studying medicinal leeches for clues about how changes in diet affect microorganisms in the digestive tract.

The new T. rex: A leech with an affinity for noses

A new leech species with ferociously large teeth -- recently discovered in noses of children that swam in Peruvian rivers -- is providing insight into the evolutionary relationships among all the leeches that have an affinity ...

Serotonin and heat play a role in leeches abilities

(PhysOrg.com) -- In two new studies published in Biology Letters, researchers have looked at the blood-sucking leeches and how serotonin and heat play a role in their ability to move and digest food after eating.

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