Sterile Diet Transfer
Sterile Diet Transfer - Related Videos
05:58
Rearing Axenic Delia antiqua with Half-Fermented Sterile Diets
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Cited by 3 •
2023
A simple procedure for rearing axenic Delia antiqua with half-fermented sterile diets is described. Only one Wolbachia strain was detected in each instar of axenic D. antiqua using PCR.
12:29
Sterile Tissue Harvest
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN In 1959 The 3 R's were introduced by W.M.S. Russell and R.L. Burch in their book The Principles of Humane Experimental Technique. The 3 R's are replacement, reduction, and refinement of the use of animals in research. The use of cell lines and tissue cultures that originated from research animals is a replacement technique, as it allows for many experiments to be conducted in vitro. Harvesting...
06:19
Testing Nicotine Tolerance in Aphids Using an Artificial Diet Experiment
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Cited by 5 •
2008
In this video and assay is demonstrated that tests the tolerance of nicotine to two types of aphids one that infests tobacco plants in the field and one that does not.
01:30
Cleaning, Sterilization, and Disinfection
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2023
Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease. Cleaning The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
07:27
The Murine Choline-Deficient, Ethionine-Supplemented (CDE) Diet Model of Chronic Liver Injury
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Cited by 14 •
2017
Here we describe a common method to induce chronic liver injury in mice by feeding of a choline-deficient and ethionine-supplemented (CDE) diet. We demonstrate health monitoring, liver perfusion, isolation, and preservation. A time course of six weeks can inform about liver injury, pathohistology, fibrosis, inflammatory, and liver progenitor cell responses.
FAQs
These conditions provide different levels of microbial exposure for interpreting developmental effects. A sterile group establishes the response in the absence of environmental microbes, a conventionally colonized group reflects normal microbial exposure, and an inoculated group tests the effect of a selected microbial presence. Comparing outcomes across these groups helps associate developmental changes with microbial exposure rather than with genetic or physiological differences alone.
By reducing unwanted microbial exposure, the method provides a controlled baseline for development driven by the organism’s own genetic and physiological programs. Researchers can then compare that baseline with organisms exposed to environmental or deliberately introduced microbes. Differences between conditions indicate developmental features that may depend on microbial presence, while shared features are more consistent with intrinsic regulation.
Growth, morphogenesis, survival, and developmental timing are key outcomes for detecting microbial influences. For example, researchers may compare how organisms progress through developmental stages, whether body-form changes occur normally, or whether survival differs between exposure conditions. Evaluating several outcomes together can show whether microbes affect a specific developmental process or produce broader changes in organismal performance.
Unplanned contamination changes the microbial environment that the experiment is intended to control. It can make a supposedly sterile group more similar to a colonized group, obscure differences between treatments, and weaken interpretation of developmental outcomes. Maintaining aseptic transfer and sterile handling therefore supports a defined comparison in which observed effects can be related more confidently to the intended exposure condition.
The workflow begins with preparing and handling the diet under sterile conditions. Developing organisms are then moved onto that diet using aseptic technique, with care taken to prevent unwanted microbial entry. The specimens remain in the defined environment while researchers monitor developmental outcomes. Parallel sterile, conventionally colonized, or deliberately inoculated conditions can provide the comparisons needed for interpretation.
The critical controls are the sterility of the diet, the cleanliness of handling, and the prevention of contamination during transfer and subsequent maintenance. The developmental specimens must enter the defined environment aseptically so that microbial exposure remains consistent with the experimental design. These controls are essential because even unintended exposure can alter the comparison between conditions.
Sterile Diet Transfer is useful when researchers need to determine whether microbial presence contributes to a developmental phenotype. It supports experiments examining growth, morphogenesis, survival, or developmental timing under controlled exposure conditions. The approach is especially informative when paired with comparisons among microbe-free, conventionally colonized, and deliberately inoculated groups, allowing developmental responses to be linked to environmental microbes.