See Also: focus-forming unit(medicine)
focus-forming assay(medicine)
spleen focus-forming viruses(medicine)
Friend spleen focus forming virus(medicine)
burst forming unit(medicine)
colony-forming unit(medicine)
plaque-forming unit(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
forming(dictionary)
forming face(medicine)

focus-forming unit (medicine)


focus-forming unit


A measurement of the concentration of live virus in a given amount of fluid. This is measured by spreading a known amount of the fluid over a layer of cultured cells which are infected by the virus, then counting the number of areas in the culture which look infected.