The circular and oval shapes in the center of this image are a group of larvae (1) from a parasitic worm known as a schistosome, or blood fluke. They are shown developing within their host, a ...

New research suggests that an “often-overlooked” parasitic infection, already linked to bladder cancer, may also raise the risk of cervical cancer.

The larvae prey on snails, whereas the adults don't eat anything. Adult females can reach around 20 millimetres in length. Males can fly and are distinguishable from females by the hard wing case ...

The miracidium stage: Miracidia hatch from schistosome eggs in water. Freshwater snails: Miracidia infect snails where they develop and multiply in the snail tissue. The cercaria stage: Many ...

Mussels, which cannot see, must make a lure that mimics a juvenile fish, worm, snail or insect to successfully attract specific fish, or in one case a type of salamander, to serve as hosts for their ...