oncosphere


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oncosphere

 [ong´ko-sfēr]
the larva of the tapeworm contained within the external embryonic envelope and armed with six hooks.

hex·a·canth

(hek'să-kanth),
The motile six-hooked first-stage larva of cyclophyllidean cestodes; it emerges from the egg and actively claws its way through the intermediate host's intestine before development into the next larval stage; for example, the hexacanth of Taenia saginata, which penetrates the intestine of a cow that ingested the egg, then forms a cysticercus in the muscles of the intermediate host.
Synonym(s): oncosphere
[hexa- + G. akantha, hook or thorn]

oncosphere

/on·co·sphere/ (ong´ko-sfēr) the larva of the tapeworm contained within the external embryonic envelope and armed with six hooks.

oncosphere

the larva of the tapeworm contained within the external embryonic envelope within the egg and armed with six hooks. Called also onchosphere.
References in periodicals archive ?
After ingestion, the eggs reach the intestine of infected animals (intermediate hosts), the oncospheres (larvae) are released, penetrate the intestinal wall, and enter the circulation.
Gauci CG, Lightowlers MW Alternative splicing and sequence diversity of transcripts from the oncosphere stage of Taenia solium with homology to the 45W antigen of Taenia ovis.
After the entry of embryos (oncospheres) into the blood stream, the oncosphere can invade various organs and develop into a Hydatid Cyst.
The oncosphere embryos emerge from the eggs, penetrate the intestinal wall, and are disseminated by the bloodstream to various tissues where the larval stage, or cysticercus, develops.
In our opinion, this is explained by the constant character of the invasion by oncospheres during the life time of the sheep.
The eggs hatch in the animal's gastro intestinal tract called oncospheres, and these penetrate in intestinal wall, enter into bloodstream and from blood to vital organs of the body, where they develop watery 'blisters' called hydatid cysts.
The oncospheres hatch in the intestine, penetrate the intestinal wall and disseminate to almost anywhere in the body.
Upon ingestion, tapeworm eggs release oncospheres, which invade the intestinal wall and disseminate through the bloodstream to form cysts throughout the body.
The migration of oncospheres of Taenia pisiformis, T.
The protector effect of homologous oncospheres to infection of Hymenolepis nana var.
Oncospheres can then hatch within the bowel and from there seed remote tissue, where they develop into cysticerci.
Upon ingestion of eggs, oncospheres escape from the eggs, penetrate the gut wall and enters the circulation and form fluid filled bladder like cysts in various tissues called coenurus.