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Vitreoretinopathy, Proliferative
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D018630 |
[Vitreoretinal membrane shrinkage or contraction secondary to the proliferation of primarily retinal pigment epithelial cells and glial cells, particularly fibrous astrocytes, followed by membrane formation. The formation of fibrillar collagen and cellular proliferation appear to be the basis for the contractile properties of the epiretinal and vitreous membranes.
] |
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Vitreoscilla
|
D020589 |
[A genus of gram-negative, aerobic or microaerophilic, colorless filaments. It is nonfruiting, motile by gliding, and found in freshwater sediments and cow dung. One species (V. stercoraria) is considered morphologically to be a streptobacillus. That species is strictly aerobic and produces a homodimeric bacterial hemoglobin, especially under oxygen-limited growth conditions. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
] |
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Vitreous Body
|
D014822 |
[The transparent, semigelatinous substance that fills the cavity behind the CRYSTALLINE LENS of the EYE and in front of the RETINA. It is contained in a thin hyaloid membrane and forms about four fifths of the optic globe.
] |
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Vitreous Detachment
|
D020255 |
[Detachment of the corpus vitreum (VITREOUS BODY) from its normal attachments, especially the retina, due to shrinkage from degenerative or inflammatory conditions, trauma, myopia, or senility.
] |
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Vitreous Hemorrhage
|
D014823 |
[Hemorrhage into the VITREOUS BODY.
] |
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Vitrification
|
D058989 |
[The transformation of a liquid to a glassy solid i.e., without the formation of crystals during the cooling process.
] |
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Vitronectin
|
D019096 |
[A blood plasma glycoprotein that mediates cell adhesion and interacts with proteins of the complement, coagulation, and fibrinolytic cascade. (From Segen, Dictionary of Modern Medicine, 1992)
] |
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Vittaforma
|
D021863 |
[A genus of parasitic FUNGI in the family Nosematidae that infects humans. Vittaforma corneae has been isolated from AIDS patients.
] |
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Viverridae
|
D045949 |
[The family of civets which are small and medium-sized Old World carnivores, often striped or spotted.
] |
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Viviparity, Nonmammalian
|
D052286 |
[The capability of bearing live young (rather than eggs) in nonmammalian species. Some species of REPTILES and FISHES exhibit this.
] |
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Vivisection
|
D014824 |
[The cutting of or surgical operation on a living animal, usually for physiological or pathological investigation. (from Merriam-Webster's Collegiate Dict, 10th ed)
] |
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Voacanga
|
D036902 |
[A plant genus of the family APOCYNACEAE. Members contain voacangine and other INDOLES.
] |
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Vocabulary
|
D014825 |
[The sum or the stock of words used by a language, a group, or an individual. (From Webster, 3d ed)
] |
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Vocabulary, Controlled
|
D018875 |
[A specified list of terms with a fixed and unalterable meaning, and from which a selection is made when CATALOGING; ABSTRACTING AND INDEXING; or searching BOOKS; JOURNALS AS TOPIC; and other documents. The control is intended to avoid the scattering of related subjects under different headings (SUBJECT HEADINGS). The list may be altered or extended only by the publisher or issuing agency. (From Harrod's Librarians' Glossary, 7th ed, p163)
] |
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Vocal Cord Dysfunction
|
D064706 |
[A disorder characterized by an intermittent abnormal VOCAL CORDS movement toward the midline during inspiration or expiration resulting in upper AIRWAY OBSTRUCTION.
] |
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Vocal Cord Paralysis
|
D014826 |
[Congenital or acquired paralysis of one or both VOCAL CORDS. This condition is caused by defects in the CENTRAL NERVOUS SYSTEM, the VAGUS NERVE and branches of LARYNGEAL NERVES. Common symptoms are VOICE DISORDERS including HOARSENESS or APHONIA.
] |
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Vocal Cords
|
D014827 |
[A pair of cone-shaped elastic mucous membrane projecting from the laryngeal wall and forming a narrow slit between them. Each contains a thickened free edge (vocal ligament) extending from the THYROID CARTILAGE to the ARYTENOID CARTILAGE, and a VOCAL MUSCLE that shortens or relaxes the vocal cord to control sound production.
] |
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Vocalization, Animal
|
D014828 |
[Sounds used in animal communication.
] |
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Vocational Education
|
D014829 |
[EDUCATION that prepares the student for a specific trade such as plumbing, masonry, and carpentry.
] |
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Vocational Guidance
|
D014830 |
[Systematic efforts to assist individuals in selecting an occupation or suitable employment on the basis of aptitude, education, etc.
] |
