Scale Collection

Scale collection is the systematic sampling and preservation of biological scales for studying their structure, development, and regeneration. In developmental biology, researchers typically obtain scales from defined body regions, maintain or fix the samples under controlled conditions, and examine changes in cellular organization, mineralization, and tissue repair. Because scales contain interacting epithelial, connective, and skeletal components, they provide a useful model for investigating tissue formation and regenerative processes. Collected samples can support microscopy, gene-expression analysis, and comparisons across developmental stages or experimental conditions, linking local tissue behavior with broader principles of organ development and repair.

Scale Collection - Related Videos

Research

JoVE Journal - Biology

The Large-Scale Cultivation of Nematodes to Study Their Collective Behaviors

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Cited by 1 •

2023

Here, a system is reported for studying the collective behaviors of nematodes by culturing them in bulk using dog food agar medium. This system allows researchers to propagate large numbers of dauer worms and can be applied to Caenorhabditis elegans and other related species.

Education

JoVE Core - Chemistry

pH Scale

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2020

Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...

Scaling

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2024

In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...

Seawater Sampling and Collection

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Cited by 13 •

2009

This video documents methods for collecting coastal marine water samples and processing them for various downstream applications including biomass concentration, nucleic acid purification, cell abundance, nutrient and trace gas analyses.

Diseconomies of Scale

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2024

Diseconomies of scale occur in the long run when the costs per unit increase with each additional unit of output. For example, the firm may double its production but only by tripling its costs. This phenomenon is the opposite of economies of scale. When the long-run average total cost remains constant with an increase in output, the firm is experiencing constant economies of scale. For example the firm's costs double when it doubles the level of output. As the firm expands its production, its...

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