ANIMAL PARASITES.

From: Science World | Date: February 12, 2001| Author: ZIMMER, CARL; BREGMAN, MARK | Copyright information

As Gross As It Gets

How far would you go to survive? Consider a parasite--an organism that lives on or inside another organism, or "host." The lancet fluke, for example, is a leaf-shaped flatworm, and this deceptively simple-looking species--Dicrocoelium dendriticum [dye-KROW-sealy-um den-DRIT-ic-um]--has a wildly elaborate life cycle. Adult flukes naturally live in and dine on the livers of grass-eating mammals like cows. The parasites shed their eggs in cow manure (see...

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