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Connecting cords and morphogenetic movements in the quail blastoderm
S Everaert1, M Espeel, H Bortier
1Department of Anatomy and Embryology, Rijksuniversiteit Gent, Belgium.
Anatomy and Embryology
|January 1, 1988
Summary
Connecting cords, or telophase bridges, are cell structures studied in quail embryos. These elongated structures align with the direction of embryonic cell movement during development.
Area of Science:
- Cell Biology
- Developmental Biology
- Microscopy
Background:
- Connecting cords, also known as telophase bridges, are transient structures that remain between separating daughter cells after cell division.
- These structures are observed in actively dividing tissues during embryonic development.
Purpose of the Study:
- To investigate the morphology and orientation of connecting cords in the quail blastoderm.
- To correlate the orientation of connecting cords with cellular movements during morphogenesis.
Main Methods:
- Scanning Electron Microscopy (SEM) was employed to visualize the connecting cords.
- The study focused on the upper cell layer of the quail blastoderm, a region with high mitotic activity.
Main Results:
- Connecting cords were observed as elongated structures persisting between separating daughter cells.
- The predominant orientation of these cords was found to be parallel to the direction of morphogenetic movements in the quail blastoderm.
Conclusions:
- The orientation of connecting cords in the quail blastoderm is influenced by or reflects the direction of morphogenetic movements.
- SEM provides valuable insights into the structural dynamics of connecting cords during embryonic development.