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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

/vec·tor/ (vek´ter)
1. a carrier, especially the animal (usually an arthropod) that transfers an infective agent from one host to another.
2. a plasmid or viral chromosome into whose genome a fragment of foreign DNA is inserted; used to introduce foreign DNA into a host cell in the cloning of DNA.
3. a quantity possessing magnitude, direction, and sense (positivity or negativity).vecto´rial

biological vector  an arthropod vector in whose body the infecting organism develops or multiplies before becoming infective to the recipient individual.
mechanical vector  an arthropod vector which transmits an infective organism from one host to another but which is not essential to the life cycle of the parasite.

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

[vek′tər]
Etymology: L, carrier
1 a quantity having direction and magnitude, usually depicted by a straight arrow. The length of the arrow represents magnitude, and the head represents direction.
2 a carrier, especially one that transmits disease. A biological vector is usually an arthropod in which the infecting organism completes part of its life cycle. A mechanical vector transmits the infecting organism from one host to another but is not essential to the life cycle of the parasite. Kinds of vectors include dogs, which carry rabies; mosquitoes, which transmit malaria; and ticks, which carry Rocky Mountain spotted fever.
3 a retrovirus that has been modified by alteration of its genetic component. Through recombinant deoxyribonucleic acid techniques, genes that cause harmful effects such as cancer are removed and genes that mediate synthesis of essential enzymes are added. The vector then can be injected into a patient who suffers from an enzyme deficiency, such as Lesch-Nyhan syndrome. vector, v., vectorial, 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.

vector

a variable, quantity or measurement that has both size and directional components. Cannot be added arithmetically due to directional component.

vector

agent (e.g. health care worker, item of equipment, insect, furnishings, air current) acting as the medium by which disease is transferred from person to person

vector

magnitude and direction of a composite force (i.e. resultant of several forces acting about a body)

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]

vector (vek´tər),

n a carrier that transmits a disease from one party to another.

vector

1. a carrier, especially the animal (usually an arthropod) which transfers an infective agent from one host to another, e.g the tsetse fly, which carries trypanosomes from animals to humans, dogs, bats and other animals that transmit the rabies virus. In molecular biology, a DNA molecule which serves to transfer DNA into a host cell.
2. a quantity possessing magnitude, direction and sense (positivity or negativity).

biological vector
an arthropod vector in whose body the infecting organism develops or multiplies before becoming infective to the recipient individual.
cloning vector
a DNA molecule used to transfer an inserted DNA segment into a host cell. Includes other viruses, phages and bacterial plasmids. Called also cloning vehicle.
mechanical vector
an arthropod vector that transmits the infective organisms from one host to another but is not essential to the life cycle of the parasite.
shuttle v's
vectors which contain both prokaryotic and eukaryotic replication signals, thus allowing replication of the vector in both kinds of cells.
targeting vector
a vector carrying a DNA sequence that is able to take part in a specified chromosomal crossover in the host.