Microbiology terms - V


vaccination
Artificial introduction of a killed or attenuated pathogen to promote protective immunity. See vaccine.
vaccine
Material used to induce specific protective immunity against a pathogen.
vector
1. A plasmid or virus used in genetic engineering to insert genes into a cell.

2. An agent, usually an insect or other animal, able to carry pathogens from one host to another.

vehicle
Nonliving source of pathogens which infect large numbers of individuals; common vehicles are food and water.
viable
Alive; able to reproduce.
viable count
Measurement of the concentration of live cells in a microbial population.
vibrio
1. A curved, rod-shaped bacterial cell.

2. A bacterium of the genus Vibrio.

virion
A virus particle; the virus nucleic acid surrounded by protien coat and in some cases other material.
viroid
A small RNA molecule with virus-like properties.
virulence
Degree of pathogenicity of a parasite.
virus
A genetic element containing either DNA or RNA that is able to alternate between intracellular and extracellular states, the later being the infectious state.

Compiled by Tsute Chen, Converted by Ben Hoyt