A Thelazia infection, called Thelaziasis, can “cause mild to severe signs and lesions, such as foreign body sensation, ...

The growth of new segments (body parts) in marine worms is controlled by a special growth zone, in which special stem cells are located. New segments then emerge by the division of these cells.

Subscribe for FREE “These blood flukes, which are among the most prevalent parasites in humans, infecting nearly 250 million people, have seemingly evolved to block the itch, making it easier for them ...

The cells that turn into sperm and eggs make up more than half its body. "It's basically a gut and two gonads," McNally said. But the little worm also shares some surprising affinities with us.

The growth of new segments (body parts) in marine worms is controlled by a special growth zone, in which special stem cells are located. New segments then emerge by the division of these cells.

Common land planarians are easily identified by their triangular, spade-shaped head. Some can stretch out a foot in length.

Parasites are organisms that survive by living on or inside a host body and feeding off its nutrients. They have the ability to inflict various health issues like digestive problems, fatigue ...