Laboratory Mice
Laboratory Mice - Related Videos
05:33
Introducing Clicker Training as a Cognitive Enrichment for Laboratory Mice
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Cited by 25 •
2017
The development of new refinement strategies for laboratory mice is a challenging task that contributes towards fulfilling the 3R principle. This protocol introduces clicker training as a cognitive enrichment program for laboratory mice.
08:03
Diagnosis of Ecto- and Endoparasites in Laboratory Rats and Mice
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Cited by 19 •
2011
This article describes various procedures for screening rats and mice to detect endo- or ectoparasitism. Several diagnostic assays will be demonstrated, both those suitable for use on live animals and those used after euthanasia of the animal. Photographs to aid in identification of rat and mouse parasites will be included.
06:12
Nest Building as an Indicator of Health and Welfare in Laboratory Mice
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Cited by 192 •
2013
We demonstrate the utility of nest building behavior in laboratory mice as an indicator of welfare. Nest scoring is a sensitive technique that is altered by temperature, illness, and aggression. The time to integrate into nest test (TINT) is a simple cage-side assessment that can detect postoperative pain.
04:56
An Efficient Single-Person Technique for Milk Sampling from Laboratory Mice
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2025
This article describes how to assemble a device that can be used to collect milk from laboratory mice. This device is affordable, portable, and allows a collection of 0.1–0.5 mL of milk by one trained person. A detailed milking protocol is also...
09:11
Implantation of Radiotelemetry Transmitters Yielding Data on ECG, Heart Rate, Core Body Temperature and Activity in Free-moving Laboratory Mice
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Cited by 56 •
2011
A surgical technique for implantation of commercially available telemetry transmitters used for continuous measurement of biopotential (one-lead ECG), heart rate, core body temperature and locomotor activity in freely moving mice is shown. Recommendations and protocols for post-operative care and pain relief, improving recovery, well being and survival rate are also presented.
FAQs
Genetic background can influence how a laboratory mouse expresses a measurable trait. Standardized breeding helps researchers compare animals with more consistent inherited characteristics, while planned genetic modifications can make the effect of a particular gene easier to examine. This design supports controlled comparisons of physiology, behavior, or treatment responses and helps separate gene-related effects from other sources of variation.
A knockout modification removes or disrupts the function of a selected gene, allowing researchers to compare resulting traits with those observed when that gene is intact. Differences in physiology, behavior, development, or treatment response can provide evidence about the gene’s biological role. The approach is most informative when the comparison isolates the modification rather than unrelated experimental differences.
Controlled environments reduce variation in conditions surrounding the animals, making observed differences easier to attribute to the biological variable under investigation. Along with standardized breeding, this control strengthens reproducibility and supports comparisons across experimental groups. It is especially important when researchers measure physiology, behavior, disease-related traits, or responses to treatment, because uncontrolled conditions could complicate interpretation.
A study can combine standardized breeding, a controlled environment, and a defined genetic approach, such as a transgenic or knockout modification. Researchers then compare measurable traits among relevant groups, including physiology, behavior, or treatment responses. These comparisons help evaluate a biological hypothesis by linking experimental design to a specific gene, process, disease-related trait, or treatment effect.
Their use spans genetics, immunology, neuroscience, cancer biology, and pharmacology. In these fields, researchers can examine conserved genes and cellular pathways, study disease or development, and measure responses to treatment. The same model therefore supports questions ranging from gene function and immune biology to nervous-system processes and drug-related effects while retaining a common experimental framework.
Shared genes and cellular pathways make mice informative for investigating human-relevant biology, but similarity does not guarantee identical physiology, disease processes, or treatment responses. Consequently, results from mouse experiments should be treated as evidence for a biological hypothesis rather than direct proof of a human outcome. Careful validation is necessary before translating conclusions to human health.