File:Mall1908a plate03fig08.jpg

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Plate III Fig. 8. Normal human embryo No. 256 16 mm long

The head had been crushed in handling and the brain escaped through the two openings over the eyes.

Online Editor 
Embryo 256 was later classified as Carnegie stage 20.


Carnegie Collection - Stage 20 
Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Point Score Sex Year Notes
240 E, 20 Ch, 50x40x30 Poor Formalin P Coronal 20 Iron H. 27 d 19??
256 E, 21 poor Alc p Sagittal 25 Coch. 23 M 1904 Tubal. Partial anencephaly
353 E, 20 Poor Alc P Sagittal 20 H. & Congo red 22,5 M 1906
431 E, 19 Ch, 30x25x25 Good Formalin P Sagittal 20 H. & Congo red 25,5 M 1908 Tubal
437 E, 23 Ch., 80x60x50 Poor Formalin P Sagittal 50 Coch 24 M 193?
453 E, 23 Ch, 60x40x30 Poor Formalin P Sagittal 20 H. & Congo red 23-5 ? 1910 Injected
460 E, 21 Exc. Bichlor. acetic P Transverse 40 (Stain - Haematoxylin Eosin), coch, 24.5 M 1910 injected
462 E, 20 Ch, 50x40x30 Exc. Formalin P Transverse 40 Al, coch 23.5 F 1910
635B E, 22 Poor Alc P Transverse 50 Al, coch 26.5 M 1913
657 E, 25 Ch, 35x20x15 Poor Formalin C Sagittal 40 Al, coch 26.5 M 1913 Tubal
966 E, 23 Ch, 51x38x13 Exc Bichlor. acetic P Coronal 40 (Stain - Haematoxylin Eosin), aur, or. G 25 M 1911 Tubal
1134B E, 23 Poor Formalin p Sagittal 100 Al. coch., 22 - 1915
1266 E, 23.1 Poor Formalin C-P Sagittal 25 Al. coch., (Stain - Haematoxylin Eosin) aur, or G 20.5 F 191?
2393 Ch, 61.5x50x35 Poor
3527 E., 22 Ch. 32x30x10 Good Formalin P Sagittal 25 Al. coch., 28 ? 1921
4059 E, 21.6 Good Formalin P Coronal 15 Al. coch., Mallory 29.5 $ 1922
4148 E, 21 Ch. 45x34x30 Good Formalin p Coronal 15 A1. coch., Mallory 19 ? 1922
4361 E, 22 Ch., 52x42x23 poor Formalin 9 Transverse 20 Coch. 24 8 1923
6202 E, 21 Ch., 35x35x22 Exc Bouin P Sagittal 20 (Stain - Haematoxylin Eosin) 20.5 8 1930 Tubal
6426 E 21.5 Good Formalin C—P Transverse 20 (Stain - Haematoxylin Eosin) 21 3 1931
7274 E, 18.5 Ch., 48x44x35 Exc Bouin C—P Transverse 20 (Stain - Haematoxylin Eosin), phlox. 20 M 1936
7906 E19.5 Exc Bouin C—P Coronal 20 (Stain - Haematoxylin Eosin) 22 8 1941 Left renal agenesis
8517 E., 20.8 Exc. Bouin C—P Coronal 20 (Stain - Haematoxylin Eosin) 24 8 1943
8226 E, 18.0 Exc. Bouin C—P Sagittal 10 Alan ? 3 1944
Abbreviations
  • Size - E. is the greatest length of the embryo and Ch. is the mean diameter of the chorion.
  • 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)
  • Stain -
  • ? - unknown or not determined.


Stage 20 Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Historic - Skull Development | Carnegie Embryos | Category:Carnegie Stage 20 | Next Stage 21
  Historic Papers: 1914 head | 1954 Stage 19-23


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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

Mall 1908: Plates | plate 1 | plate 2 | plate 3 | fig 8 | fig 9 | plate 4 | fig 10 | fig 11 | Figures

Reference

Mall FP. A study of the causes underlying the origin of human monsters. (1908) J Morphol. 19: 3-368.


Cite this page: Hill, M.A. (2024, June 18) Embryology Mall1908a plate03fig08.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Mall1908a_plate03fig08.jpg

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