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The relationship between the edge of the chick blastoderm and the vitelline membrane

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  1. 1.

    The edge of the chick blastoderm has been filmed as it migrated over the inner surface of the vitelline membrane. Ruffled membranes are described, comparable to those reported byAbercrombie andAmbrose for other types of cells growing in tissue culture.

  2. 2.

    The ruffled membranes, which have been examined both by scanning and transmission electron microscopy, are visible as broad, flattened processes which adhere closely to the inner surface of the vitelline membrane.

  3. 3.

    The inner and outer surfaces of the vitelline membrane, and the endodermal surface of the area opaca, have also been examined by scanning electron microscopy.


  1. l.

    Der Rand des Hühnchen-Blastoderms wurde gefilmt während der Migration über die innere Oberfläche des Dottermembrans. Dabei wurden „ruffled membranes“ beobachtet, die den vonAbercrombie undAmbrose beschriebenen entsprechen.

  2. 2.

    „Ruffled membranes“ wurden im Transmissions- und auch im Raster-Elektronenmikroskop untersucht. Sie sind sichtbar als breite, abgeflachte Fortsätze, die nahe an der inneren Oberfläche des Dottermembran kleben.

  3. 3.

    Die innere und äu\ere Oberfläche des Dottermembran und auch die endodermale Oberfläche des Area Opaca, wurden im Raster-Elektronenmikroskop untersucht.

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The “Stereoscan” scanning electron microscope was provided by the Science Research Council. We would like to thank Mr. R. F.Moss and Mrs. J.Hamilton for technical assistance, and Mrs. J.Astafiev for the drawings.

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Bellairs, R., Boyde, A. & Heaysman, J.E.M. The relationship between the edge of the chick blastoderm and the vitelline membrane. W. Roux' Archiv f. Entwicklungsmechanik 163, 113–121 (1969). https://doi.org/10.1007/BF00579315

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  • Electron Microscopy
  • Scanning Electron Microscopy
  • Transmission Electron Microscopy
  • Tissue Culture
  • Developmental Biology