A reference to describe a fish that has a tail with two symmetrical lobes that extend beyond the end of the vertebral column, or a tail of this kind.
With long slender tapering tail; as with, some fish.
A genus of long, threadlike filarial nematodes of the family Onchocercidae.
They are found in subcutaneouis and connective tissue, or confined within tough, fibrous cysts. The most important species, Onchocerca volvulus is the cause of human onchocerciasis. Other species cause cutaneous diseases among domestic and wild herbivores.
A disease caused by infection with filarial worms of the genus Onchocerca, primarily Onchocerca volvulus, transmitted by the bite of female blackflies of the genus Simulium. The disease is characterized by nodular swellings formed by fibrous cysts containing the worms.
A subcutaneous nodule or lesion, usually situated near a bony prominence, that contains the adult worms in infections caused by Onchocerca species, especially Onchocerca vovulus.
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