Recent Examples of nematocyst from the Web
The tentacles contain stinging nematocysts that can deliver venom capable of paralyzing and killing small fish and crustaceans and cause extreme pain and welts to humans.
The blue dragon steals stinging cells, called nematocysts, from man-of-wars, storing them in specialized organs in the tips of their cerata, or wings—which may explain their name.
Researchers initially thought these nematocysts might be genetically similar to those of cnidarians, animals such as jellyfish and sea anemones.
Polykrikos cells have a capsule, called a nematocyst, that contracts to propel a sharp stylet through the water—and through the armor of another microbe.
Some have sharp skeletons and tentacles with nematocysts (stinging cells) that immobilize prey.
A jellyfish’s tentacles do seem to be an odd choice of meal: humans are wary of their sting, which occurs when skin contact triggers small, harpoon-like structures called nematocysts to inject venoms that attack the victim’s cells.
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Britannica.com: Encyclopedia article about nematocyst
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