Embryo Sterilization
Embryo Sterilization - Related Videos
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...
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...
01:30
Methods of Sterilization II: Chemical Methods
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2023
In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements. Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
01:29
Methods of Sterilization I: Physical Methods
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2025
As used in a healthcare facility, sterilization destroys all microorganisms through physical or chemical methods. The physical method includes steam, dry heat, boiling water, and radiation. Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
02:52
Prenatal Mouse Embryos Retrieval: A Procedure to Harvest Embryos from Pregnant Mouse
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2025
This video demonstrates the retrieval of embryos from a pregnant mouse. The recovered perinatal embryos can be used as model systems for studying mammalian development.
FAQs
The treatment must reduce or inactivate microorganisms on the embryo without exposing it so aggressively or for so long that development is impaired. This creates a central optimization problem: disinfecting conditions, exposure duration, and rinsing must be selected to control contamination while preserving the embryo’s capacity to remain viable and develop.
Repeated washing helps remove microorganisms associated with the embryo, while the final sterile rinsing step removes residual disinfecting treatment. Together, these stages separate microbial control from prolonged chemical exposure. Their value is practical: they support a cleaner starting material for subsequent culture or transfer while helping limit treatment-related effects on embryo viability.
Animal applications emphasize aseptic collection and pathogen-controlled transfer, whereas plant applications emphasize surface sterilization before tissue culture. In animals, the broader goal may include germ-free or defined-microbiota models. In plants, the treated embryo becomes starting material for propagation, conservation, or developmental studies. Thus, the downstream system determines how contamination control is used.
An embryo sterilization workflow begins with aseptic collection, continues through repeated washing, applies a brief exposure to an appropriate disinfecting treatment, and ends with sterile rinsing. The sequence addresses contamination at collection and during treatment rather than relying on a single step. Afterward, embryos can enter the intended culture or transfer workflow.
It supports pathogen-controlled embryo transfer by reducing microorganisms associated with embryos before transfer. The approach can also contribute to producing germ-free or defined-microbiota models, where controlling the microbial status of the transferred material is important. Its relevance therefore extends from transfer procedures to experimental systems requiring controlled biological conditions.
In plant biology, surface-sterilized embryos can be introduced into tissue culture systems for propagation, conservation, and developmental studies. Preventing contamination is important because unwanted microorganisms can compromise the culture and obscure the developmental process being examined. Sterilized starting material therefore helps maintain experimental continuity and supports the intended use of the tissue culture system.