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  2. Auxanography - Wikipedia

    en.wikipedia.org/wiki/Auxanography

    Auxanography is the study of the effects of changes in environment on the growth of microorganisms, by means of auxanograms. [1] It was first devised by Beijerinck [2] for testing the effect of various nutrient media upon bacteria.

  3. Blue–white screen - Wikipedia

    en.wikipedia.org/wiki/Blue–white_screen

    The blue–white screen is a screening technique that allows for the rapid and convenient detection of recombinant bacteria in vector-based molecular cloning experiments. This method of screening is usually performed using a suitable bacterial strain, but other organisms such as yeast may also be used. DNA of transformation is ligated into a ...

  4. Bacteriological water analysis - Wikipedia

    en.wikipedia.org/wiki/Bacteriological_water_analysis

    The laboratory procedure involves making serial dilutions of the sample (1:10, 1:100, 1:1000, etc.) in sterile water and cultivating these on nutrient agar in a dish that is sealed and incubated. Typical media include plate count agar for a general count or MacConkey agar to count Gram-negative bacteria such as E. coli. Typically one set of ...

  5. Microtox bioassay - Wikipedia

    en.wikipedia.org/wiki/Microtox_bioassay

    The Microtox Model 500 is a laboratory-based photometer that measures acute toxicity.This analyser is a temperature-controlled, self-calibrating biosensor measuring system that uses the bioluminescence of Allivibrio fischeri to determine the toxicity of contaminated water, or elutriates of contaminated soils and sediments.

  6. Replica plating - Wikipedia

    en.wikipedia.org/wiki/Replica_plating

    Negative selection through replica plating to screen for ampicillin sensitive colonies. Replica plating is a microbiological technique in which one or more secondary Petri plates containing different solid (agar-based) selective growth media (lacking nutrients or containing chemical growth inhibitors such as antibiotics) are inoculated with the same colonies of microorganisms from a primary ...

  7. Diagnostic microbiology - Wikipedia

    en.wikipedia.org/wiki/Diagnostic_Microbiology

    Diagnostic microbiology is the study of microbial identification. Since the discovery of the germ theory of disease , scientists have been finding ways to harvest specific organisms. Using methods such as differential media or genome sequencing , physicians and scientists can observe novel functions in organisms for more effective and accurate ...

  8. List of instruments used in microbiological sterilization and ...

    en.wikipedia.org/wiki/List_of_instruments_used...

    used as primary bacterial/cell filters in procedures as toxin, immunoglobulin, etc. production, where the product gets denatured on heating •Air filter: like HEPA filter, used in various laboratories and clean rooms to produce lamellar air flow Radiation: •Gamma ray source

  9. Antibiotic sensitivity testing - Wikipedia

    en.wikipedia.org/wiki/Antibiotic_sensitivity_testing

    Antibiotic resistance tests: Bacteria are streaked on dishes with white disks, each impregnated with a different antibiotic. Clear rings, such as those on the left, show that bacteria have not grown—indicating that these bacteria are not resistant. The bacteria on the right are fully resistant to all but two of the seven antibiotics tested. [33]

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