kokkuleppeline ühik eluvõimeliste bakteri- või seenerakkude arvu hindamiseks uuritavas proovis. Need rakud on võimelised pooldumise teel paljunedes moodustama pesi (kolooniaid) tahke söötme pinnal kindlates tingimustes inkubeerimisel.
one or more cells that grow to form a single visible colony
The report should include the total number of plaque-forming units (pfu) or colony-forming units (cfu), the number of mutants, and the mutant frequency for each tissue from each animal.
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May be written with or without a hyphen between the first two words. The spelling with a hyphen is recommended.
If the active substance is a micro-organism, its content shall be expressed as the number of active units per volume or weight or any other matter that is relevant to the micro-organism, e.g. colony forming units per gram (cfu/g); ...
