File:Stage2 bf01.jpg: Difference between revisions

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(==Human Embryo Carnegie Stage 2== Carnegie Collection Embryo No.8698 '''Facts:''' Week 1, 4 - 5 days, size 0.1-0.2 mm 2 cells, Carnegie No. 8698. Described by Hertig etal. (1954). Tubal. Diameter, 178.5 um (122 x 88 after fixation; 111.6 X 75 after sec)
 
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Carnegie Collection Embryo No.8698
Carnegie Collection Embryo No.8698


'''Facts:''' Week 1, 4 - 5 days, size 0.1-0.2 mm
'''Facts:''' Week 1, 1 - 2 days, size about 0.1 mm, 2 cell blastomere, polar bodies and thick zone pellucida.


2 cells, Carnegie No. 8698. Described by Hertig etal. (1954). Tubal. Diameter, 178.5 um (122 x 88 after fixation; 111.6 X 75 after sectioning); blastomeres, 71 (74 x 64 and 80 x 56 after fixation; 68.3 x 61.6 and 70 x 50 after sectioning); polar bodies, 20 x 18 after fixation. A few cells of the corona radiata were present. Thick zona pellucida (18um in thickness before fixation). No spermatozoa were seen in the zona, and the possibility of parthenogenetic cleavage "cannot be entirely ruled out" (Dickmann etal, 1965). Two polar bodies. Whether the larger blastomere "is the one of trophoblastic potential is unknown but it is probable" (Hertig, 1968). Believed to be about I-2 days old.
'''Features:''' [[zona pellucida]]


{{Carnegie_stages}}


'''Features:''' [[zona pellucida]], [[T#trophoblast shell|trophoblast shell]], [[I#inner cell mass|inner cell mass]], [[B#blastoceol|blastoceol]]
{{Footer}}


{{Template:Carnegie_stages}}


{{Template:Footer}}
[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 2]] [[Category:Week 1]]  
 
[[Category:Carnegie Embryo 8698]]
 
[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 2]] [[Category:Week 1]] [[Category:Blastocyst]]

Latest revision as of 12:05, 24 October 2017

Human Embryo Carnegie Stage 2

Carnegie Collection Embryo No.8698

Facts: Week 1, 1 - 2 days, size about 0.1 mm, 2 cell blastomere, polar bodies and thick zone pellucida.

Features: zona pellucida

Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline

Cite this page: Hill, M.A. (2024, June 27) Embryology Stage2 bf01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage2_bf01.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current14:49, 7 March 2012Thumbnail for version as of 14:49, 7 March 2012650 × 521 (49 KB)Z8600021 (talk | contribs)==Human Embryo Carnegie Stage 2== Carnegie Collection Embryo No.8698 '''Facts:''' Week 1, 4 - 5 days, size 0.1-0.2 mm 2 cells, Carnegie No. 8698. Described by Hertig etal. (1954). Tubal. Diameter, 178.5 um (122 x 88 after fixation; 111.6 X 75 after sec

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