planarian


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planarian

(plə-nâr′ē-ən)
n.
Any of various small, chiefly freshwater flatworms of the order Tricladida, having a soft, broad, ciliated body, a three-branched digestive cavity, and the ability to regenerate body parts.
References in periodicals archive ?
We obtained several fine examples of this common planarian.
Scientists had first hypothesized in the late 1800s that planarian stem cells, which normally gather near the worms' midlines, can travel toward wounds.
Tracking and predation on earthworms by the invasive terrestrial planarian Bipalium adventitium (Tricladida, Platyhelminthes).
Mortality of the earthworm Eisenia fetida (Savigny) presented to the terrestrial planarian Artioposthia triangulata (Dendy) (Tricladida: Terricola).
Indefinite self-fertilisation in the freshwater planarian Cura pinguis.
Overall, these data indicate that conservation exists between human and planarian cytokine-like molecules that could be secreted by reticular cells.
Freshwater planarian flatworms are a popular model system in regeneration and stem cell research because they are able to regenerate any part of their body, even the head, in two weeks.
Planarian worms have amazed scientists with their apparently limitless ability to regenerate.
Researchers have determined that the source of the planarian flatworm's extraordinary regenerative powers is a single pluripotent stem cell type.
Planarian regeneration involves the generation of new tissue at the wound site via cell proliferation (blastema formation), and the remodeling of pre-existing tissues to restore symmetry and proportion (morphallaxis).