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(fot′ĕr) Ger. botanist and anatomist, 1684–1751.
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V. ampulla Papilla of Vater.
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V. corpuscles Pacinian corpuscle.
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papilla of V. An elevation in the descending or second part of the duodenum. It is formed by a smooth muscle sphincter, which, when relaxed, permits the release of pancreatic enzymes and bile into the duodenum. SYN: major duodenal papilla; hepatopancreatic ampulla; Vater ampulla.
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video-assisted thoracic surgery (used to treat conditions such as empyema, or loculations in the pleural space).
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(valt) A part or structure resembling a dome or arched roof.
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Shorthand for “vaccine,” or “vaccination.”
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(văks′kō-ră) The proprietary name of an oral vaccine against cholera.
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vaginal birth after previous cesarean.
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vascular cell adhesion molecule-1.
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voiding cystourethrography.
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valvular disease of the heart.
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Venereal Disease Research Laboratories.
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(vek′shŏn) [L. vectio, a carrying] 1. Transfer of disease agents by a vector from the sick to the well. 2. Illusion of self-motion. This may be produced experimentally by having the subject seated within a drum that rotates while the subject remains stationary.
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(vek′tŏr) [L. vector, a carrier] 1. A quantity that is completely specified by magnitude, direction, and sense, which can be represented by a straight line of appropriate length and direction. 2. A carrier, usually an insect or other arthropod, that transmits the causative organisms of disease from infected to noninfected individuals. 3. An agent such as a retrovirus that is used to introduce genetic material into the nucleus of a diseased cell in an attempt to cure a genetic illness or a malignancy.
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biological v. An animal vector in which the disease-causing organism multiplies or develops prior to becoming infective for a susceptible person.
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mechanical v. A vector in or upon which growth and development of the infective agent do not occur.
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shuttle v. A short DNA segment, such as may be found in a bacteriophage or a plasmid, that carries DNA between organisms of two different species.
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(vek′tŏr-born″) Carried from one host to another by an intermediary.
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(vek″tŏr-kard′ē-ŏ-gram″) [...