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vector

 [vek´tor]
1. a carrier, especially the animal (usually an arthropod) that transfers an infective agent from one host to another. Examples are the mosquito that carries the malaria parasite Plasmodium between humans, and the tsetse fly that carries trypanosomes from other animals to humans. Dogs, bats, and other animals are vectors that transmit the rabies virus to humans.
2. a plasmid or viral chromosome into whose genome a fragment of foreign DNA is inserted, used to introduce the foreign DNA into a host cell in the cloning of DNA.
3. a quantity possessing magnitude, direction, and sense (positivity or negativity), and commonly represented by a straight line resembling an arrow; the length of the line denotes magnitude, the arrowhead denotes sense, and the position of the line with respect to an axis of reference denotes direction. adj., adj vector´ial.
biological vector an animal vector in whose body the pathogenic organism develops and multiplies before being transmitted to the next host.
mechanical vector an animal vector not essential to the life cycle of the parasite.

vec·tor

(vek'tŏr, tōr),
1. An invertebrate animal (for example, tick, mite, mosquito, bloodsucking fly) capable of transmitting an infectious agent among vertebrates.
2. Anything (for example, velocity, mechanical force, electromotive force) having magnitude and direction; it can be represented by a straight line of appropriate length and direction.
3. The net electrical axis of any ECG wave (usually QRS) the length of which is proportional to the magnitude of the electrical force, the direction of which gives the direction of the force and the tip of which represents the positive pole of the force.
4. DNA such as a chromosome or plasmid that autonomously replicates in a cell into which another DNA segment may be inserted and be itself replicated, as in cloning.
5. Synonym(s): recombinant vector
6. Recombinant DNA systems especially suited for production of large quantities of specific proteins in bacterial, yeast, insect, or mammalian cell systems.
[L. vector, a carrier]

vector

(vĕk′tər)
n.
1. An organism, such as a mosquito or tick, that carries disease-causing microorganisms from one host to another.
2. A bacteriophage, plasmid, or other agent that transfers genetic material from one cell to another.

vec·to′ri·al (vĕk-tôr′ē-əl) adj.

vector

An MRI term for a force which is commonly represented as an arrow. The length of the line segment represents the magnitude, and its orientation in space represents its direction.

vector

Epidemiology
1. An 'inactive' vehicle of transport of an agent of disease; an intermediate host of parasites with indirect life cycles.
2. A thing that transmits a pathogen–eg, an arthropod transporting viruses and parasites, or an inanimate intermediary in indirect transmission of an agent from a reservoir to a susceptible host; a carrier that transmits a pathogen from one host to another.

vec·tor

(vek'tŏr)
1. An invertebrate animal (e.g., tick, mite, mosquito, bloodsucking fly) capable of transmitting an infectious agent among vertebrates.
2. Anything (e.g., velocity, mechanical force, electromotive force) having magnitude and direction; can be represented by a straight line of appropriate length and direction.
3. The net electrical axis of any electrocardiographic wave (usually QRS), the length of which is proportional to the magnitude of the electrical force: its direction gives the direction of the force, and its tip represents the positive pole of the force.
4. DNA (e.g., a chromosome or plasmid) that autonomously replicates in a cell to which another DNA segment may be inserted and be itself replicated, as in cloning.
5. Synonym(s): recombinant vector.
6. Recombinant DNA systems especially suited for production of large quantities of specific proteins in bacterial, yeast, insect, or mammalian cell systems.
[L. vector, a carrier]

vector

An animal such as an insect, capable of transmitting an infectious disease from one person to another. The disease organism develops and multiplies in the vector and may pass through various stages, or may even be transmitted through one or more generations of the vector, before being passed on to a human host. From the Latin vectus , one who carries.

vector

  1. any organism that transmits a parasite. For example, the Anopheles mosquito transmits the MALARIA PARASITE.
  2. plasmid or virus DNA used to introduce genes into a host cell, where the genes may be amplified (GENE CLONING) or otherwise manipulated. see GENETIC ENGINEERING.

Vector

An animal carrier that transfers an infectious organism from one host to another. The vector that transmits Lyme disease from wildlife to humans is the deer tick or black-legged tick.

vec·tor

(vek'tŏr)
1. An invertebrate animal (e.g., tick, mite, mosquito, bloodsucking fly) capable of transmitting an infectious agent among vertebrates.
2. Anything (e.g., velocity, mechanical force, electromotive force) having magnitude and direction.
3. Synonym(s): recombinant vector.
[L. vector, a carrier]
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