File:Pedicellina echinata Early stages in the development of the egg.jpg
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Fig. 318.—Early stages in the development of the egg of Pedicellina echinata. (After Hatschek.) A, flattened blastula. B, gastrula. C, optical section of later stage nearly sagittal Showing the mother cell of the mesoderm of the right side, the endodermic sac, and the stomodaeal invagination. D, view of stage in which the blastopore is closing seen from below. E, frontal section of the same stage; blp, blastopore ; end, endodermic sac ; mes, mother cells of the mesoderm |
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| Source | https://www.flickr.com/photos/internetarchivebookimages/20781139341/in/photostream/ Text-book of embryology. London : Macmillan |
| Author | MacBride, E. W.; Kerr, John Graham ; Heape, Walter |
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/20781139341. It was reviewed on 23 March 2024 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
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| current | 22:15, 23 March 2024 | | 1,278 × 844 (239 KB) | Rasbak (talk | contribs) | {{information |description=Fig. 318.—Early stages in the development of the egg of Pedicellina echinata. (After Hatschek.) A, flattened blastula. B, gastrula. C, optical section of later stage nearly sagittal Showing the mother cell of the mesoderm of the right side, the endodermic sac, and the stomodaeal invagination. D, view of stage in which the blastopore is closing seen from below. E, frontal section of the same stage; blp, blastopore ; end, endodermic sac ; mes, mother cells of the mes... |
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