| oncho- | See: onco-. (05 Mar 2000) |
|---|---|
| onchocerca | A genus of parasitic nematodes whose organisms live and breed in skin and subcutaneous tissues. Onchocercal microfilariae may also be found in the urine, blood, or sputum. (12 Dec 1998) |
| Onchocerca cervicalis | A species common in the ligamentum nuchae of horses, mules, and asses, where it has been suspected of playing a role in fistulous withers and poll evil. (05 Mar 2000) |
| Onchocerca gibsoni | A species that infects the subcutaneous tissues of cattle, buffalo, and sheep. (05 Mar 2000) |
| Onchocerca lienalis | A species that inhabits the connective tissue around the ligamentum nuchae, tibiofemoral ligament, spleen capsule, and other sites in cattle and buffalo; although widely distributed, it is not common in the U.S. (05 Mar 2000) |
| onchocerca volvulus | A species of parasitic nematodes widely distributed throughout central africa and also found in northern south america, southern mexico, and guatemala. Its intermediate host and vector is the blackfly or buffalo gnat. (12 Dec 1998) |
| Onchocerca volvulus L3 cysteine protease | <enzyme> Required for molting of o. Volvulus third stage larvae; genbank u71150 Registry number: EC 3.4.22.- Synonym: cysteine protease l3, o volvulus, lovcp (26 Jun 1999) |
| onchocerciasis | Infection with nematodes of the genus onchocerca. Characteristics include the presence of firm subcutaneous nodules filled with adult worms, pruritus, and ocular lesions. (12 Dec 1998) |
| onchocerciasis, ocular | Filarial infection of the eyes transmitted from person to person by bites of onchocerca volvulus-infected black flies. The microfilariae of onchocerca are thus deposited beneath the skin. They migrate through various tissues including the eye. Those persons infected have impaired vision and up to 20% are blind. The incidence of eye lesions has been reported to be as high as 30% in central america and parts of africa. (12 Dec 1998) |
| onchocercid | Common name for members of the family Onchocercidae. (05 Mar 2000) |
| Onchocercidae | A family of nematode parasites (superfamily Filarioidea) characterised by production of microfilariae; it includes the genera Onchocerca, Wuchereria, Brugia, Loa, and Mansonella. (05 Mar 2000) |
| onchocercosis | Infection with nematodes of the genus onchocerca. Characteristics include the presence of firm subcutaneous nodules filled with adult worms, pruritus, and ocular lesions. (12 Dec 1998) |