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Limbness in the early chick embryo lateral plate
T D Stephens1, R L Beier, D C Bringhurst
1Department of Biological Sciences, Idaho State University, Pocatello 83209.
Developmental Biology
|May 1, 1989
Summary
Early chick embryos possess limb-forming potential in multiple regions, including the flank, neck, wing, and leg. This limbness quality is restricted to wing and leg regions after embryonic stage 14.
Area of Science:
- Developmental biology
- Embryology
- Morphogenesis
Background:
- Understanding "limbness" is crucial for studying early morphogenesis.
- Previous research assumed flank regions lack limbness qualities in early development.
- Some studies suggest early flank regions may possess limbness qualities.
Purpose of the Study:
- To investigate the extent of "limbness" qualities in early chick embryos.
- To determine which embryonic regions exhibit limbness potential at different developmental stages.
Main Methods:
- Grafting experiments using tissues from future neck, wing, flank, and leg regions.
- Evaluation of grafted tissues' ability to form limbs in host celoms.
- Analysis of limb development across different embryonic stages (11-14 and post-14).
Main Results:
- Limbs successfully developed from grafts of all four regions (neck, wing, flank, leg) in stage 11-14 chick embryos.
- After stage 14, only grafts from the wing and leg regions were capable of forming limbs.
Conclusions:
- Early chick embryos (stages 11-14) exhibit limbness potential across multiple regions.
- The capacity for limb formation becomes restricted to the designated limb regions (wing and leg) after stage 14.