Category:Carnegie Embryo 5080: Difference between revisions

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This {{Embryology}} category relates to the Carnegie Collection Embryo No. {{CE5080}}. This embryo was classified as [[Carnegie stage 9|'''Stage 9''']] occurring during [[Week 3]].
This {{Embryology}} category relates to the Carnegie Collection Embryo No. {{CE5080}}. This embryo was classified as [[Carnegie stage 9|'''Stage 9''']] occurring during [[Week 3]].
* 1 somite
* Studied and illustrated by Davis (1927, figs. 2–5 and 39–42)<ref name=Davis1927>{{Ref-Davis1927}}</ref>
* Severn (1971, figs. 1–4).<ref name=Severn1971>{{Ref-Severn1971}}</ref>
* First pair of somites not separate rostrally and contain no myocoeles (Arey, 1938).<ref name=Arey1938>{{Ref-Arey1938}}</ref>
* Chorion, 14.5 x 1.5 mm. Embryonic disc, 1.5 mm.
* Reconstructed by Müller and O'Rahilly (1983, fig. 2).
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{{Carnegie stage 9 links}}
{{Carnegie stage 9 links}}
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! Serial No. !! Pairs of somites || Size (mm) || Grade !! Fixative !! Embedding Medium !! Plane || Thinness (µm) !! Stain  !! Year !! Notes
! Serial No. !! Pairs of somites || Size (mm) || Grade !! Fixative !! Embedding Medium !! Plane || Thinness (µm) !! Stain  !! Year !! Notes
|-
|-
| {{CE5080}} || 1 || E., 1.5<br>Ch., 14.5 || Poor || Formol || P || Trans. || 10 || Al. coch. || 1926 || Studied by Davis (1927)<ref name=Davis1927>{{Ref-Davis1927}}</ref>
| {{CE5080}} || 1 || E., 1.5<br>Ch., 14.5 || Poor || Formol || P || Trans. || 10 || {{Al. coch.}} || 1926 || Studied by Davis (1927)<ref name=Davis1927>{{Ref-Davis1927}}</ref>
|-
|-
|}
|}

Latest revision as of 13:17, 16 January 2020

This Embryology category relates to the Carnegie Collection Embryo No. 5080. This embryo was classified as Stage 9 occurring during Week 3.

  • 1 somite
  • Studied and illustrated by Davis (1927, figs. 2–5 and 39–42)[1]
  • Severn (1971, figs. 1–4).[2]
  • First pair of somites not separate rostrally and contain no myocoeles (Arey, 1938).[3]
  • Chorion, 14.5 x 1.5 mm. Embryonic disc, 1.5 mm.
  • Reconstructed by Müller and O'Rahilly (1983, fig. 2).


Stage 9 Links: Week 3 | Gastrulation | Lecture | Somitogenesis | Lecture - Mesoderm | Lecture - Ectoderm | Lecture - Early Vascular | Science Practical | Carnegie Embryos | Category:Carnegie Stage 9 | Next Stage 10
  Historic Papers: 1920 | 1926 | 1945


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


Serial No. Pairs of somites Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Year Notes
5080 1 E., 1.5
Ch., 14.5		 Poor Formol P Trans. 10 (Stain - Al. coch.) 1926 Studied by Davis (1927)[1]


References

  1. ↑ 1.0 1.1 Davis CL. Development of the human heart from its earliest appearance to the stage found in embryos of twenty paired somites. (1927) Carnegie Instn. Wash. Publ 380. 19: 245-284.
  2. ↑ Severn CB. A morphological study of the development of the human liver. I. Development of the hepatic diverticulum. (1971) Amer. J Anat. 131: 133-158. PMID 5575887
  3. ↑ Arey LB. The history of the first somite in human embryos. (1938) Contrib. Embryol., Carnegie Inst. Wash. Publ. 496, 27: 233-269.



Carnegie Collection - Stage 9 
Serial No. Pairs of somites Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Year Notes
1878 2-3 Embryo, 1.38
Ch., 12x10.5x7.5		 Good Formalin P Coronal 10 (Stain - Haematoxylin Eosin) 1917 Described by Ingalls (1920).[1]
5080 1 Embryo, 1.5
Ch., 14.5		 Poor Formalin P Transverse 10 Al. coch. 1926 Studied by Davis (1927).[2]
7650 2-3 Embryo, 2-3 Good Alc & Bouin C-P Transverse 6 (Stain - Haematoxylin Eosin) 1939 Said to be female[3]
Abbreviations
  • Grade - total grade of the specimen and includes both its original quality and the condition of the mounted sections.
  • Embedding medium - paraffin (P) or a combination of celloidin and paraffin (C-P).
  • Fixative - formalin (Formol), alcohol and formalin (Alc, formol), Bouin (Bouin solution)
  • ? - unknown or not determined.
References
  1. ↑ Ingalls, N.W. 1920. A human embryo at the beginning of segmentation, with special reference to the vascular system. Carnegie Instn. Wash. Publ. 274, Contrib. Embryol., 11, 61-90.
  2. ↑ Davis, C. L. 1927. Development of the human heart from its first appearance to the stage found in embryos of twenty paired somites. Carnegie Instn. Wash. Publ 380, Contrib. Embryol., 19, 245-284.
  3. ↑ PARK WW. (1957). The occurrence of sex chromatin in early human and macaque embryos. J. Anat. , 91, 369-73. PMID: 13448995

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