Colony Morphology Analysis
Colony Morphology Analysis - Related Videos
03:54
Preparation of Bacterial Biofilm Colonies for Morphological Analysis
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2026
Source: Bucher, T., et. al., Methodologies for Studying B. subtilis Biofilms as a Model for Characterizing Small Molecule Biofilm Inhibitors. J. Vis. Exp.(2016)This video demonstrates the preparation of mature bacterial biofilm colonies for high-resolution imaging. It covers fixation, dehydration, mounting, and metal coating steps to preserve and visualize biofilm morphology.
13:11
Video Bioinformatics Analysis of Human Embryonic Stem Cell Colony Growth
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Cited by 17 •
2010
Video bioinformatics is the automated processing, analysis, understanding, and data mining of biological spatio-temporal data extracted from microscopic videos. The purpose of this article is to demonstrate a method for measuring human embryonic stem cell colony growth using a video bioinformatics method.
11:48
Analysis of Dendritic Spine Morphology in Cultured CNS Neurons
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Cited by 69 •
2011
Numerous recent studies have identified mutations in synaptic proteins associated with brain pathologies. Primary cultured cortical neurons offer great flexibility in examining the effects of these disease-associated proteins on dendritic spine morphology and motility.
11:41
Automated Sholl Analysis of Digitized Neuronal Morphology at Multiple Scales
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Cited by 61 •
2010
We have developed a computer program to analyze neuronal morphology. In combination with two existing open source analysis tools, our program performs Sholl analysis and determines the number of neurites, branch points, and neurite tips. The analyses are performed so that local changes in neurite morphology can be observed.
07:59
The Analysis of Purkinje Cell Dendritic Morphology in Organotypic Slice Cultures
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Cited by 15 •
2012
We present a protocol that permits to view and to quantitatively asses the morphology of the dendritic tree of individual Purkinje cells grown in organotypic cerebellar slice cultures. This protocol is intended to promote studies on the mechanisms of Purkinje cell dendritic development.
FAQs
Colony appearance reflects both microbial characteristics and growth conditions. Nutrient composition, incubation temperature, and the time allowed for growth can alter visible traits, so comparisons are most meaningful when cultures are examined under controlled conditions. Recognizing this variability helps investigators avoid treating a changed appearance as definitive evidence of a different microorganism or a biological change.
Investigators compare several traits together rather than relying on one visual feature. Size, shape, margin, elevation, texture, pigmentation, opacity, and hemolysis can create a characteristic appearance that supports comparison among colonies. This combined assessment is especially useful when multiple colony types occur on the same solid medium and need to be distinguished for further examination.
Visible traits provide an initial basis for comparison, but they do not by themselves establish microbial identity. Similar appearances may occur among different isolates, while growth conditions can modify the same isolate’s appearance. Confirmatory biochemical or molecular identification therefore strengthens interpretation and helps connect an observed colony phenotype with a reliable identification in infection research.
Distinct colony appearances on one culture plate can indicate that more than one microbial population is present, prompting investigators to distinguish and assess individual colonies. Repeated examination can also document changes in clinical or environmental isolates over time. These observations support decisions about which colonies require separate evaluation, while confirmatory testing determines the significance of the differences.
After growth on solid medium under controlled incubation, investigators examine and record the visible traits of the colonies. They compare colony types, assess whether the culture appears uniform, and select representative colonies for microscopy, biochemical testing, or molecular identification. This workflow turns a rapid visual screen into a basis for more specific downstream characterization.
The approach is useful when investigators need an accessible first assessment of microbial growth from clinical or environmental isolates. In immunology and infection studies, it can help distinguish culture components, monitor isolate changes, and prioritize samples for additional testing. Its value lies in quickly organizing observations before more specialized identification or characterization methods are applied.
It can indicate whether a culture appears uniform, whether multiple visibly distinct colony types are present, and which colonies may warrant separate follow-up. Features such as hemolysis, pigmentation, opacity, and texture add descriptive information that helps guide selection for microscopy, biochemical testing, or molecular identification. The resulting observations support, but do not replace, confirmatory analysis.