nematocyst
cnida

Some, but not all, species in this genus have prominent white nematocyst clusters.

After penetration, the toxic content of the nematocyst is injected into the target.

The nematocyst is the stinging apparatus of the phylum Cnidaria.

It has been shown, however, that the nematocyst (stinging) response is not related to nerve activity.

The toxin(poison) in their Nematocyst are effective against their prey and humans.

A lance inside the nematocyst pierces the victim's skin, and poison flows through into the victim.

Clearing the area of jelly, tentacles, and wetness further reduces nematocyst firing.

The cell which produces the nematocyst is variously called a cnidocyte, cnidoblast, or nematocyte.

When stimulated the cnidae secrete nematocyst toxins that are biological poisons.

The coiled nematocyst is a hollow tube that exists inside the cell in an "inside out" condition.

They catch their prey by means of cnidocyst (or nematocyst) -laden tentacles that hang down in the water.

When disrupted the cannonball secretes a mucus out of its nematocyst that contains a toxin.

Their marginal is branched, with nematocyst clusters on the upper and adhesive organs on the lower branches.

Cnidocytes are cells containing a coiled thread-like structure called a nematocyst, fired at potential prey.

A single nematocyst has been shown to suffice in paralyzing a small arthropod (Drosophila larva).

Each nematocyst contains a small vesicle filled with toxins (actinoporins), an inner filament, and an external sensory hair.

Lidocaine has also proved effective in treating jellyfish stings, both numbing the affected area and preventing further nematocyst discharge.

Cnidocytes contain nematocyst, capsule-like organelles capable of everting, giving phylum Cnidaria its name.

A cnidocyte fires a structure that contains the toxin, from a characteristic sub-cellular organelle called a cnidocyst (also known as a cnida or nematocyst).

Initial swimmer exposure to the free-floating larvae produces no effects, as each organism possesses only a single undeveloped nematocyst which is inactive while suspended in sea water.

The toxin is also harmful to the eyes, when the nematocyst comes in contact with eyes it is very painful and is followed with redness and swelling.

The Latin name of this species, cruxmelitensis, refers to the arrangement of the white nematocyst capsules (stinging organs) in the distinctive pattern of a Maltese Cross.

Each nettle tentacle is coated with thousands of microscopic nematocysts; in turn, every individual nematocyst has a "trigger" (cnidocil) paired with a capsule containing a coiled stinging filament.

When the trigger is activated, the tubule shaft of the cnidocyst is ejected and in the case of the penetrant nematocyst, the forcefully ejected tubule penetrates the target organism.

Upon contact with prey, the contents of the nematocyst are explosively discharged, firing a dart-like thread containing neurotoxins into whatever triggered the release which can paralyse the prey, especially if many hundreds of nematocysts are fired.