Viability of Amoebae, Fungal Conidia, and Yeasts: Rapid Assessment by Flow Cytometry
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Last Update: 2021-02-17
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Source: Internet
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Author: User
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Conventional methods for the evaluation of antimicrobials and disinfecting solutions with microorganisms involve culture-based techniques, which are time-consuming and underestimate the number of viable organisms. Rapid detection and viability measurements of microorganisms in homogenous and heterogenous microbial populations have been greatly enhanced by recent advances in the use of fluorescent stains in flow cytometry (FCM) (
1
–
5
). FCM has been applied to enumerate, differentiate, and identify microorganisms, determine protein and
DNA
content of cells, analyze the physiological state of individual cells, and analyze the interaction of drugs, antibiotics, and antimicrobials with microbial cells (
1
–
14
). Four physiological states of cells can be distinguished by FCM: (1) reproductively viable, (2) metabolically active, (3) intact, and (4) permeabilized (
15
).
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