| vegetive | Having the nature of a plant; vegetable; as, vegetive life. See: Vegetate, and Vegetative. Source: Websters Dictionary (01 Mar 1998) |
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| vegetoanimal | Relating to both plants and animals. A term sometimes applied to vegetable albumen and gluten, from their resemblance to similar animal products. Source: Websters Dictionary (21 Jun 2000) |
| VEGF | A growth factor that is responsible for the growth of blood vessels. (12 Dec 1998) |
| vehicle | 1. An excipient. 2. Any medium through which an impulse is propagated. Origin: L. Vehiculum (18 Nov 1997) |
| vehicle emissions | Gases, fumes, vapors, and odours escaping from the cylinders of a gasoline or diesel internal-combustion engine. (12 Dec 1998) |
| vehicles | A carrier or inert medium used as a solvent (or diluent) in which the medicinally active agent is formulated and or administered. (12 Dec 1998) |
| veil | 1. Something hung up, or spread out, to intercept the view, and hide an object; a cover; a curtain; especially, a screen, usually of gauze, crape, or similar diaphnous material, to hide or protect the face. "The veil of the temple was rent in twain." (Matt. Xxvii. 51) "She, as a veil down to the slender waist, Her unadorned golden tresses wore." (Milton) 2. A cover; disguise; a mask; a pretense. "[I will] pluck the borrowed veil of modesty from the so seeming Mistress Page." (Shak) 3. <botany> The calyptra of mosses. A membrane connecting the margin of the pileus of a mushroom with the stalk; called also velum. 4. A covering for a person or thing; as, a nun's veil; a paten veil; an altar veil. 5. <zoology> Same as Velum. To take the veil, to receive or be covered with, a veil, as a nun, in token of retirement from the world; to become a nun. Origin: OE. Veile, OF. Veile, F. Voile, L. Velum a sail, covering, curtain, veil, probably fr. Vehere to bear, carry, and thus originally, that which bears the ship on. See Vehicle, and cf. Reveal Alternative forms: vail. Source: Websters Dictionary (01 Mar 1998) |
| veil cell | An antigen-presenting cell that has veil-like cytoplasmic processes and circulates in the blood and lymph. Synonym: veiled cells. (05 Mar 2000) |
| veiled cell | A cell type found in afferent lymph and defined (rather unsatisfactorily) on the basis of its morphology. Probably an accessory cell migrating from the periphery (where it is referred to as a Langerhans cell if in the skin) to the draining lymph node. In the lymph node known as an interdigitating cell and found in the T dependent areas of spleen or lymph nodes, involved in antigen presentation (Class II MHC positive). Has high levels of surface Ia antigens. (18 Nov 1997) |
| veiled cells | An antigen-presenting cell that has veil-like cytoplasmic processes and circulates in the blood and lymph. Synonym: veiled cells. (05 Mar 2000) |
| veiling glare | Glare resulting from excessive illumination. Synonym: veiling glare. (05 Mar 2000) |
| veillonella | A genus of gram-negative, anaerobic cocci parasitic in the mouth and in the intestinal and respiratory tracts of man and other animals. (12 Dec 1998) |
| Veillonella alcalescens alcalescens | A subspecies found primarily in the mouth of humans but occasionally in the buccal cavity of rabbits and rats; it is the type subspecies of the species Veillonella alcalescens. (05 Mar 2000) |
| Veillonella alcalescens criceti | A subspecies found in the mouth of hamsters. (05 Mar 2000) |
| Veillonella alcalescens dispar | A subspecies found in the mouth and respiratory tract of humans. (05 Mar 2000) |