Embryo Screening
Embryo Screening - Related Videos
04:22
Embryo-Based Chemical Toxicity Screen: Assessing Effects on Developing Zebrafish Embryos
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2023
In this article, zebrafish embryos are used for chemical toxicity screening. Chemical toxicity is correlated with phenotype readouts. The sample protocol shows a methodological approach of performing the chemical toxicity screening.
13:48
Live Dissection of Drosophila Embryos: Streamlined Methods for Screening Mutant Collections by Antibody Staining
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Cited by 30 •
2009
We describe a streamlined protocol for generating "fillet" preparations of Drosophila embryos of specific genotypes. This protocol allows efficient execution of a variety of genetic screens. It also allows excellent visualization of structures in the late embryo.
07:45
A Manual Small Molecule Screen Approaching High-throughput Using Zebrafish Embryos
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Cited by 23 •
2014
The zebrafish is an excellent experimental organism to study vertebrate developmental processes and model human disease. Here, we describe a protocol on how to perform a manual high-throughput chemical screen in zebrafish embryos with a whole-mount in situ hybridization (WISH) read-out.
07:48
Zebrafish Breeding and Embryo Handling
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2023
Zebrafish (Danio rerio) are an important model organism that is particularly valuable for research in developmental biology. Zebrafish are extremely fertile and can produce hundreds of progeny per week, so it is relatively easy to collect a large number of embryos for high sample numbers. Furthermore, zebrafish undergo rapid development and embryos are transparent, allowing for easy visualization of developmental processes. This video covers the steps required for the collection of newly...
02:31
Rabbit Embryo Thawing: A Warming Procedure to Recover Cryopreserved Rabbit Embryos for Embryo Transfer
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2025
This video demonstrates the procedure for thawing vitrified rabbit embryos and the precautionary measurement steps for optimal embryo recovery.
FAQs
The analysis can examine different genetic features depending on the testing goal. DNA-based testing may identify a particular inherited variant, whereas chromosome analysis evaluates whether embryos have abnormal chromosome copy numbers. These findings answer different biological questions: one concerns transmission of a specific genetic change, while the other concerns broader chromosomal balance during early development.
A screening result describes selected genetic or chromosomal features detected in the tested cells, but it does not establish that implantation will occur or that a healthy birth will follow. Reproductive outcomes therefore cannot be inferred from screening alone. This limitation is important when interpreting results and considering how they may inform embryo selection decisions.
A small number of cells are removed from an embryo developed through in vitro fertilization while the embryo remains in culture. Those cells provide material for DNA or chromosome analysis, allowing testing without treating the entire embryo as the analytical sample. The procedure connects laboratory measurement with decisions about which embryos may be considered for implantation.
The workflow begins with embryo development through in vitro fertilization, followed by collection of a small cell sample. The sample is then analyzed for DNA features or chromosome copy number while the embryo remains in culture. Results can identify embryos carrying particular inherited variants or abnormal chromosome numbers, supplying information for subsequent reproductive decisions.
In biology, these approaches support investigation of early development, genome stability, and inheritance. Comparing genetic or chromosomal findings among embryos can help researchers examine how genomic features relate to embryo development and selection. The same laboratory framework therefore contributes both to reproductive decision-making and to broader studies of biological processes occurring early in development.
Using genetic and chromosomal information in embryo selection raises questions about how findings should be interpreted, which abnormalities or inherited variants warrant consideration, and how much weight laboratory results should receive. These issues accompany the scientific limitations of screening, because the tests provide selected information rather than certainty about implantation or a healthy birth.