Dictionary > Plaque-forming unit

Plaque-forming unit

Definition
A measure of the quantity of individual infectious particles (e.g. virus particles) based on the number of plaque formed per unit volume.
Supplement
Theoretically, the plaque-forming unit includes only the infectious virus particles since a virus particle failing to infect a host cell will not be able to produce a plaque, hence, will not be counted. PFU rules out possible multiple-hit phenomena and include only the particles capable of infecting cells on their own. Thus, one PFU means one lytic event (or one infectious virus particle).
Abbreviation: PFU

Compare: colony-forming unit (CFU).


You will also like...

Young plant growing from the soil.
Soils

Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

vitamins
A Balanced Vitamin Diet – Vitamins A – K

A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

The process of photosynthesis
Photosynthesis – Photolysis and Carbon Fixation

Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..

Energy pyramid
Freshwater Community Energy Relationships – Producers & Consumers

This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

human respiratory system
Respiration

The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

Pikas are an indicator species for climate change
Indicator Species and Endangered Species

Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..

Related Articles...

No related articles found

See all Related Topics