Cage Modification
Cage Modification - Related Videos
02:32
Histone Modification
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2020
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression. Acetylation The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
08:03
Maintenance of a Drosophila melanogaster Population Cage
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Cited by 7 •
2016
This manuscript reports a detailed protocol for culturing, on a regular basis, a population of Drosophila melanogaster using a fly population cage.
04:49
A Do-it-yourself System for Scheduled Feeding of Laboratory Rodents in Their Home Cage
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2025
This paper details the design, assembly, and protocol for an automated feeding system along with an alternative lid and cage modification that can be implemented on standard rodent cages with minimal modifications for tethered optogenetic or fiber photometry experiments. The feeding system offers a cost-effective tool for timed feeding and/or caloric restriction.
02:25
Spreading of Chromatin Modifications
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2020
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex. Writers The writer is an enzyme that can...
01:17
The Thoracic Cage: Sternum
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2023
The thoracic or rib cage forms the body's thorax (chest) portion. Its primary function in the body is to protect vital organs in the thoracic cavity, such as the heart and the lungs. It consists of 12 pairs of ribs with their costal cartilages and the sternum. The ribs are anchored posteriorly to the 12 thoracic vertebrae (T1-T12). The sternum is the elongated bony structure on the anterior side of the thoracic cage. It consists of three parts: the manubrium, the body, and the xiphoid process.
FAQs
Added shelters, nesting materials, climbing structures, and objects change the sensory, motor, and social opportunities available in the housing environment. These altered opportunities can influence exploration, activity, stress-related responses, and interactions with surroundings. As a result, observed behavior may reflect both the animal’s characteristics and its environmental experience, which matters when interpreting behavioral phenotypes.
Behavioral outcomes depend on which opportunities a modification creates and how those opportunities affect the animal’s environment. A change may influence movement, sensory engagement, social interaction, or exposure to potential stressors, and these effects can shape behavior in different ways. Consequently, investigators must consider the specific cage design and contents rather than treating all modifications as equivalent.
Cage modification can become an experimental variable because housing conditions may influence learning, stress-related responses, social behavior, activity, and exploration. If modified and unmodified environments differ, behavioral measurements may reflect those environmental differences as well as the factor under investigation. Recognizing this influence helps researchers distinguish an intended experimental effect from variability introduced by housing conditions.
Environmental additions can provide animals with greater opportunities for exploration, activity, interaction with objects, and other forms of engagement. In this context, cage modification may support enrichment while also changing behavior relevant to welfare assessment. Researchers therefore need to evaluate welfare-related effects alongside experimental outcomes, because a change intended to improve housing can also influence the measured phenotype.
Researchers should record the cage design and its contents, including the presence of shelters, nesting materials, climbing structures, or objects. Documentation makes environmental conditions identifiable across groups and studies. Standardizing these features where appropriate reduces unrecognized variability and supports reproducibility, allowing investigators to determine whether behavioral differences arise from the planned manipulation or from inconsistent housing conditions.
Investigators can treat the housing environment as a defined experimental condition and compare behavioral outcomes across clearly documented cage designs or contents. Measures may include exploration, activity, stress-related responses, learning, social behavior, and environmental interaction. This approach helps reveal how environmental conditions shape phenotype and behavior while preserving a clear connection between the modification and the outcome.
It is particularly relevant when a study examines learning, stress-related responses, social behavior, animal welfare, or interactions with the environment. In each case, housing conditions may influence the behaviors being measured and therefore the study’s conclusions. Considering cage modification during design and interpretation helps researchers identify environmental contributions that might otherwise be mistaken for effects of the primary research factor.
Standardization limits unintended differences in cage design or contents that could affect behavior and experimental outcomes. Without it, variation in environmental opportunities may alter exploration, activity, stress-related responses, or social interactions independently of the intended comparison. Consistent conditions and careful records improve reproducibility and make it easier to attribute observed differences to the research question rather than uncontrolled housing variability.