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Connecting cords and morphogenetic movements in the quail blastoderm

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Summary

Connecting cords are elongated telophase bridges persisting between separating daughter cells. We have studied them with Scanning Electron Microscopy in the upper cell layer of the quail blastoderm where a high mitotic activity accompanied by interkinetic nuclear migration coincides with morphogenetic movements. The predominant orientation of the connecting cords is parallel to the direction of the morphogenetic movements.

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References

  • Allenspach AL, Roth LE (1967) Structural variations during mitosis in the chick embryo. J Cell Biol 33:179–196

    Google Scholar 

  • Andries L, Vakaet L, Vanroelen C (1983) The dorsal surface of the animal pole of the just laid quail egg, studied with SEM. Anat Embryol 166:135–147

    Google Scholar 

  • Bancroft M, Bellairs R (1974) The onset of differentiation in the epiblast of the chick blastoderm (SEM and TEM). Cell Tissue Res 155:399–418

    Google Scholar 

  • Bancroft M, Bellairs R (1977) Placodes of the chick embryo studied by SEM. Anat Embryol 154:97–108

    Google Scholar 

  • Bellairs R, Bancroft M (1975) Midbodies and beaded threads. Am J Anat 143:393–398

    Google Scholar 

  • Bellairs R, Breathnach AS, Gross M (1975) Freeze-fracture replication of junctional complexes in unincubated and incubated chick embryos. Cell Tissue Res 162:235–252

    Google Scholar 

  • Buck RC, Ohara PT, Daniels WH (1976) Intercellular bridges of chick blastoderm studied by Scanning and Transmission Electron Microscopy. Experientia 32:505–506

    Google Scholar 

  • Buck RC, Tisdale JM (1962) The fine structure of the mid-body of the rat erythroblast. J Cell Biol 13:109–115

    Google Scholar 

  • Derrick GE (1937) An analysis of the early development of the chick embryo by means of mitotic index. J Morph 61:257–284

    Google Scholar 

  • Flemming W (1891) Neue Beiträge zur Kenntnis der Zelle. Arch Microsc Anat 37:685

    Google Scholar 

  • Fujita S (1962) Kinetics of cellular proliferation. Exp Cell Res 28:52–60

    Google Scholar 

  • Jacob HJ, Christ B, Jacob M, Bijvank GJ (1974) Scanning Electron Microscope (SEM) studies on the epiblast of young chick embryos. Z Anat Entwickl Gesch 143:205–214

    Google Scholar 

  • Langman J, Guerrant RL, Freeman BG (1966) Behaviour of neuroepithelial cells during closure of the neural tube. J Comp Neurol 127:399–412

    Google Scholar 

  • Meier S (1979) Development of the embryonic chick otic placode. II: Electron microscopic analysis. Anat Rec 191:459–478

    Google Scholar 

  • Nägele RG, Lee HY (1979) Ultrastructural changes in cells associated with interkinetic nuclear migration in the developing chick neuroepithelium. J Exp Zool 210:89–106

    Google Scholar 

  • Nägele RG, Lee HY (1980) A transmission and scanning electron microscopic study of cytoplasmic threads of dividing neuroepithelial cells in early chick embryos. Experientia 36:338–340

    Google Scholar 

  • Sauer F (1935) Mitosis in the neural tube. J Comp Neurol 62:377–405

    Google Scholar 

  • Sauer F (1936) The interkinetic migration of embryonic epithelial nuclei. J Morphol 60:1–11

    Google Scholar 

  • Schoenwolf G (1982) On the morphogenesis of the early rudiments of the developing central nervous system. Scanning electron microscopy I:289–308

    Google Scholar 

  • Schoenwolf G (1983) The chick epiblast: a model for examining epithelial morphogenesis. Scanning electron microscopy III:1371–1385

    Google Scholar 

  • Spratt NT Jr (1952) Localization of the prospective neural plate in the early chick blastoderm. J Exp Zool 120:109–130

    Google Scholar 

  • Vakaet L (1970) Cinemicrographic investigations of gastrulation in the chick blastoderm. Arch Biol 81:387–426

    Google Scholar 

  • Vakaet L (1984) Early development in birds. In: Le Douarin N, McLaren A (eds) Chimeras in developmental biology. Academic Press, London, pp 71–88

    Google Scholar 

  • Vanroelen C, Vakaet L (1981) The effect of the osmolality of the buffer solution of the fixative on the visualization of microfilament bundles in the chick blastoderm. J Submicrosc Cytol 13:89–93

    Google Scholar 

  • Waterman RE (1976) Topographical changes along the neural fold associated with neurulation in the hamster and mouse. Am J Anat 146:151–172

    Google Scholar 

  • Watterson RL (1965) Structure and mitotic behavior of the early neural tube. In: De Haan, Ursprung (eds) Organogenesis, Holt, Rinehart & Winston, New York, pp 129–159

    Google Scholar 

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This work was supported by Grant no. 3.9001.81 of the Belgian Fund for Medical Scientific Research (F.G.W.O.)

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Everaert, S., Espeel, M., Bortier, H. et al. Connecting cords and morphogenetic movements in the quail blastoderm. Anat Embryol 177, 311–316 (1988). https://doi.org/10.1007/BF00315838

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  • DOI: https://doi.org/10.1007/BF00315838

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