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  2. Viable count - Wikipedia

    en.wikipedia.org/wiki/Viable_count

    Determining the viable cell count is important for calculating dilutions required for the passaging of cells, as well as determining the size and number of flasks needed during growth time. It is also vital when seeding plates for assays, such as the plaque assay , [ 2 ] because the plates need a known number of live replicating cells for the ...

  3. Cell counting - Wikipedia

    en.wikipedia.org/wiki/Cell_counting

    A Coulter counter is an appliance that can count cells as well as measure their volume. It is based on the fact that cells show great electrical resistance; in other words, they conduct almost no electricity. In a Coulter counter the cells, swimming in a solution that conducts electricity, are sucked one by one into a tiny gap.

  4. Total viable count - Wikipedia

    en.wikipedia.org/wiki/Total_Viable_Count

    Total viable count (TVC), gives a quantitative estimate of the concentration of microorganisms such as bacteria, yeast or mould spores in a sample.The count represents the number of colony forming units (cfu) per g (or per ml) of the sample.

  5. Viability assay - Wikipedia

    en.wikipedia.org/wiki/Viability_assay

    Protease viability marker: One can look at protease function in specimens if they wish to target viability in cells; this practice in research is known as "Protease Viability Marker Assay Concept". The actions of protease cease once a cell dies, so a clear-cut line is drawn in determining cell viability when using this technique. [5]

  6. Colony-forming unit - Wikipedia

    en.wikipedia.org/wiki/Colony-forming_unit

    Counting with colony-forming units requires culturing the microbes and counts only viable cells, in contrast with microscopic examination which counts all cells, living or dead. The visual appearance of a colony in a cell culture requires significant growth, and when counting colonies , it is uncertain if the colony arose from a single cell or ...

  7. Miles and Misra method - Wikipedia

    en.wikipedia.org/wiki/Miles_and_Misra_method

    The Miles and Misra Method (or surface viable count) is a technique used in Microbiology to determine the number of colony forming units in a bacterial suspension or homogenate. The technique was first described in 1938 by Miles, Misra and Irwin who at the time were working at the LSHTM. [1] The Miles and Misra method has been shown to be ...

  8. The Top Hair, Skin, and Nail Vitamins for 2024: Best Picks ...

    www.aol.com/entertainment/top-hair-skin-nail...

    Together, the formula provides a unique solution to target common hair, skin, and nail issues from multiple angles, making Nutrafol my favorite hair growth supplement 2024. Active Ingredients: Saw ...

  9. Bacterial growth - Wikipedia

    en.wikipedia.org/wiki/Bacterial_growth

    Stationary phase results from a situation in which growth rate and death rate are equal. The number of new cells created is limited by the growth factor and as a result the rate of cell growth matches the rate of cell death. The result is a “smooth,” horizontal linear part of the curve during the stationary phase.