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Updated: May 26, 2026
Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods
Published on: March 10, 2020
Pathology methods for the evaluation of embryonic and perinatal developmental defects and lethality in genetically
J M Ward1, S A Elmore, J F Foley
1Global VetPathology, Montgomery Village, MD 20886, USA. globalvetpathology@gmail.com
Abstract:
The normal embryonic development of organs and other tissues in mice and all species is preprogrammed by genes. Inactivation of a gene involved in any stage of normal embryonic development can have severe consequences leading to embryonic or postnatal developmental defects and lethality. Pathology methods are reviewed for evaluating normal and abnormal placenta and embryo, especially after E12.5. These methods include pathology protocols for necropsy and histopathology in addition to references that will provide additional knowledge for embryo assessment including histology atlases and advanced embryo imaging techniques.
Insights
Gene inactivation during embryonic development can cause severe defects. This review covers pathology methods for evaluating normal and abnormal embryos and placentas, aiding developmental defect research.
Area of Science:
- Developmental Biology
- Genetics
- Pathology
Background:
- Embryonic development is genetically programmed, with gene function critical for organogenesis.
- Gene inactivation can lead to significant embryonic and postnatal developmental abnormalities, including lethality.
- Accurate assessment of embryonic and placental development is crucial for understanding genetic impacts.
Purpose of the Study:
- To review pathology methods for evaluating normal and abnormal embryos and placentas.
- To provide resources for enhanced embryo assessment, particularly after embryonic day 12.5 (E12.5).
- To support research into gene function and developmental defects.
Main Methods:
- Review of established pathology protocols for embryonic and placental necropsy.
- Detailed examination of histopathology techniques for tissue analysis.
- Compilation of references for advanced embryo imaging and histology atlases.
Main Results:
- Pathology methods, including necropsy and histopathology, are essential for evaluating embryonic and placental development.
- Specific protocols are available for assessing embryos and placentas, particularly post-E12.5.
- Histology atlases and advanced imaging techniques offer further insights into developmental processes.
Conclusions:
- Standardized pathology methods are vital for the accurate assessment of embryonic and placental development.
- Utilizing comprehensive resources aids in identifying and understanding developmental defects caused by gene inactivation.
- This review provides a framework for researchers studying gene function and developmental abnormalities.
