Egg Bearing Collection
Egg Bearing Collection - Related Videos
03:26
Drosophila Egg Collection and Dechorionation: A Method to Remove the Outermost Egg Layer
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2023
The Drosophila embryo is surrounded by protective outer membranes. To gain access to the embryo, the chorion–the outermost of the membranes–is often removed. This video describes a commonly used method of dechorionation using sodium hypochlorite. The example protocol demonstrates the procedure while employing sterile techniques necessary for axenic or gnotobiotic animal rearing.
02:24
Chick Chorioallantoic Membrane Harvest: A Method to Isolate Tumor Graft-bearing Chorioallantoic Membrane from Chicken Egg
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2023
This video demonstrates the isolation of tumor-bearing chorioallantoic membrane from the chicken embryo. The harvested CAM can be used for further downstream applications.
02:25
Egg Laying Assay: A Method to Quantify the Egg-Laying Behavior of C. elegans
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2023
C. elegans egg-laying behavior can provide important information in developmental, reproductive, and anatomical studies. This video introduces the important steps of an egg laying assay and shows a sample experiment in which a drug is tested for reproductive toxicity.
05:08
Egg Windowing: A Method of Opening Fertilized Chicken Egg Shell to Expose Chorioallantoic Membrane Vasculature
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2023
In this video, we describe a technique to open the eggshell of a fertilized chicken egg to expose its chorioallantoic membrane or CAM carrying a network of branching blood vessels. The exposed CAM can be used for in ovo tumor modeling.
12:29
Upright Imaging of Drosophila Egg Chambers
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Cited by 1 •
2015
The upright imaging method described in this protocol allows for the detailed visualization of the poles of a developing Drosophila melanogaster egg. This end-on view provides a new perspective into the arrangements and morphologies of multiple cell types in the follicular epithelium.
FAQs
Careful identification and handling help preserve egg integrity while minimizing harm to a gravid parent when the organism is collected with its eggs. Transfer should also maintain the developmental conditions associated with the sample. These priorities are important because damaged eggs, altered conditions, or poor handling can reduce sample quality and limit observations of early development.
Eggs and early embryos remain useful for study only when their developmental conditions are preserved during collection and transfer. Maintaining those conditions supports continued development and more reliable observations. In laboratory culture, breeding, or conservation work, attention to developmental requirements helps distinguish biological changes from changes caused by collection or handling.
Collecting a gravid organism retains the parent and may be important when parent health or reproductive biology is part of the investigation. Collecting an egg-bearing structure focuses on obtaining the eggs or embryos themselves for study, reproduction, or culture. The choice therefore depends on whether the research requires the parent, the eggs, or both.
Standardized methods make identification, collection, and transfer more consistent across samples. This consistency can improve sample quality and support comparable observations of embryonic development. It also helps researchers apply the same general approach in reproductive studies, species monitoring, laboratory culture, and managed propagation, where uneven handling could affect the condition or usefulness of collected material.
A basic workflow begins by identifying eggs, egg-bearing structures, or gravid individuals. The selected material is then collected carefully, transferred without compromising egg integrity, and kept under appropriate developmental conditions. When a parent organism is involved, its health is also considered. The resulting sample can then support observation, culture, reproduction, or further biological study.
Collected eggs and early embryos provide material for examining developmental processes and reproductive biology. Samples can also support species monitoring by documenting reproductive material associated with particular organisms. When collection is standardized, researchers can obtain more consistent samples for observation and laboratory culture, improving the value of developmental records and related biological comparisons.
The approach is useful when conservation or breeding programs need access to eggs, gravid organisms, or egg-bearing structures while preserving viable developmental material. Managed propagation can use collected samples to support reproduction or culture, whereas conservation efforts may use them for species monitoring. Protecting egg integrity and parent health helps maintain the biological value of these programs.