| Theileria parva lawrencei | A parasite of the wild African buffalo (Syncerus caffer); it is highly pathogenic to cattle, causing Corridor disease. Synonym: Theileria lawrencei. (05 Mar 2000) |
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| Theileria parva parva | A highly pathogenic parasite causing East Coast fever in cattle. (05 Mar 2000) |
| Theileria sergenti | A bovine species found worldwide which, in some regions, has been reported to cause clinical disease in cattle. Synonym: Theileria sergenti. (05 Mar 2000) |
| Theileria taurotragi | A species that causes benign bovine theileriosis, and is infective to sheep and goats; transmitted by Rhipicephalus pulchellus in Africa. (05 Mar 2000) |
| theileriasis | Infection of bovines with protozoa of the genus theileria. This infection results in an acute or chronic febrile condition. (12 Dec 1998) |
| Theileriidae | A family of sporozoan protozoa which, combined with the family Babesiidae, comprises the order Piroplasmida; it consists of one recognised genus, Theileria, transmitted by ixodid ticks; some species are highly pathogenic to domestic and wild ruminants, causing theileriosis. (05 Mar 2000) |
| theileriosis | Protozoan disease of cattle, sheep, and goats caused by infection with protozoan of the genus Theileria, and transmitted by ixodid ticks. Synonym: theileriasis. Benign bovine theileriosis, theileriosis in cattle, a protozoan disease caused either by Theileria mutans (transmitted by ticks of the genus Amblyomma in Africa and the Caribbean) or by T. Taurotragi (transmitted by the ticks Rhipicephalus appendiculatus and R. Pulchellus in Africa). Malignant ovine and caprine theileriosis, a highly pathogenic protozoan disease of sheep and goats in southeastern Europe, northern Africa, and the Near and Middle East; it is caused by Theileria hirci and transmitted by the tick Hyalomma anatolicum anatolicum. (05 Mar 2000) |
| thein | <chemical> A xanthine derivative that elevates cAMP levels in cells by inhibiting phosphodiesterases. (18 Nov 1997) |
| theine | <chemistry> See Caffeine. Synonym: theina. Origin: F. Theine, fr. NL. Thea. See Theiform. Source: Websters Dictionary (01 Mar 1998) |
| theinism | Theism Chronic poisoning resulting from immoderate tea-drinking, marked by palpitation, insomnia, nervousness, headache, and dyspepsia. Synonym: theaism. Origin: Mod. L. Thea, tea (05 Mar 2000) |
| theism | The belief or acknowledgment of the existence of a God, as opposed to atheism, pantheism, or polytheism. Origin: From Gr. God; probably akin to to pray for, spoken by God, decreed: cf. F. Theisme. Cf. Enthusiasm, Pantheon, Theology. Source: Websters Dictionary (01 Mar 1998) |
| thel- | See: thelo-. (05 Mar 2000) |
| thelarche | The beginning of development of the breasts in the female. Origin: thel-+ G. Arche, beginning (05 Mar 2000) |
| Thelazia | The eye worms, a genus of spiruroid nematodes that inhabit the lacrimal ducts and surface of the eyes of various domestic and wild animals, but rarely man; a number of species have been reported from wild birds. Cyclic development occurs in muscoid flies; infective larvae emerge from the fly mouthparts while the fly is feeding on or near the eyes of the host. Origin: G. Thelazo, to suck Thelazia californiensis, a species occurring in the tear ducts, conjunctival sac, or under the nictitating membrane of dogs, coyotes, black bears, sheep, deer, jack rabbits, cats, and occasionally humans in the western and southwestern U.S.; heavy infections cause photophobia, lacrimation, eyelid oedema, conjunctivitis, and even blindness. Thelazia callipaeda, a species reported from man in Southeast Asia and California; the worm, embedded in a subconjunctival tumour or swimming in the aqueous humor after penetrating the corneoscleral limbus, causes pain, photophobia, and tearing. (05 Mar 2000) |
| thelaziasis | Infection with nematodes of the genus Thelazia. (05 Mar 2000) |