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==Fig. 21-22.== | |||
Three 9-day specimens of Horizon Vb, characterized by syncytiotrophoblastic lacunae with early utero-placental circulation, amniogenesis, a simple bilaminar germ disc and only variable degrees of exocoelomie (Heuser’s) membrane formation. | |||
21 The endomctrium has slightly more early decidual reaction than 8171 in figure 18. This specimen is similar in general development to 8171 except that its exocoelomic membrane is not yet formed, possibly because of hemorrhage into the chorionic cavity. See figure 23 for details. [[:Category:Carnegie Embryo 8004|Carnegie 8004]], Section 11-4-7. X 100. | |||
22 Surface view of intact specimen after fixation and partial dehydration. This was prominent prior to fixation because of size, ulceration of endomctrial surface over the ovum and the unusual feature of hemorrhage into the chorionic cavity. This is the youngest human implantation site that was visible without fixation. [[:Category:Carnegie Embryo 8004|Carnegie 8004]], Sequence 7. X 22. | |||
{{Hertig1956 figures}} | |||
Latest revision as of 20:26, 23 February 2017
Fig. 21-22.
Three 9-day specimens of Horizon Vb, characterized by syncytiotrophoblastic lacunae with early utero-placental circulation, amniogenesis, a simple bilaminar germ disc and only variable degrees of exocoelomie (Heuser’s) membrane formation.
21 The endomctrium has slightly more early decidual reaction than 8171 in figure 18. This specimen is similar in general development to 8171 except that its exocoelomic membrane is not yet formed, possibly because of hemorrhage into the chorionic cavity. See figure 23 for details. Carnegie 8004, Section 11-4-7. X 100.
22 Surface view of intact specimen after fixation and partial dehydration. This was prominent prior to fixation because of size, ulceration of endomctrial surface over the ovum and the unusual feature of hemorrhage into the chorionic cavity. This is the youngest human implantation site that was visible without fixation. Carnegie 8004, Sequence 7. X 22.
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Reference
Hertig AT. Rock J. and Adams EC. A description of 34 human ova within the first 17 days of development. (1956) Amer. J Anat., 98:435-493.
Cite this page: Hill, M.A. (2024, April 23) Embryology Hertig1956 fig21-22.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Hertig1956_fig21-22.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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