Paper - The human conceptus during the first two weeks of gestation

From Embryology
Embryology - 20 Aug 2019    Facebook link Pinterest link Twitter link  Expand to Translate  
Google Translate - select your language from the list shown below (this will open a new external page)

العربية | català | 中文 | 中國傳統的 | français | Deutsche | עִברִית | हिंदी | bahasa Indonesia | italiano | 日本語 | 한국어 | မြန်မာ | Pilipino | Polskie | português | ਪੰਜਾਬੀ ਦੇ | Română | русский | Español | Swahili | Svensk | ไทย | Türkçe | اردو | ייִדיש | Tiếng Việt    These external translations are automated and may not be accurate. (More? About Translations)

Rock J. and Hertig AT. The human conceptus during the first two weeks of gestation. (1948) Amer. J. Obstet. Gynecol, 55: 6-17. PMID 18918949

Online Editor 
Mark Hill.jpg
This historic 1949 paper describes early human development in week 1 and 2. Draft only.


See also: Rock J. and Hertig AT. Two human ova of the previous stage, having an ovulation age of about eleven and twelve days respectively. (1941) Contrib. Embryol., Carnegie Inst. Wash. Publ.525, 29: 127-156.

Rock J. and Hertig AT. Some aspects of early human development. (1942) Amer. f. Obstet. Gynecol, 44: 973-983.

Hertig AT. and Rock J. Two human ova of the pre-villous stage, having a developmental age of about seven and nine days respectively. (1945) Contrib. Embryol., Carnegie Inst. Wash. Publ. 557, 31: 65-84.

Hertig AT. and Rock J. On a normal human ovum not over 7.5 days of age. (1945) Anat. Rec, 91: 281.

Hertig AT. and Rock J. On a normal ovum of approximately 9 to 10 days of age. (1945) Anat. Rec, 91: 281.


Week 1 Links: stage 1 | stage 2 | stage 3 | menstrual cycle | fertilization | zygote | morula | blastocyst | Lecture - Fertilization | meiosis | mitosis | Lecture - Week 1 and 2 | menstrual cycle | oocyte | spermatozoa | twinning | Genetic risk maternal age | Trisomy 21 | Trisomy 18 | Trisomy 13 | hydatidiform mole | GA week 3
Week 2 Links: stage 4 | stage 5 | stage 6 | Lecture - Week 1 and 2 | implantation | trophoblast | human chorionic gonadotropin | pregnancy test | twinning | Category:Week 2 | GA week 4
Historic Disclaimer - information about historic embryology pages 
Mark Hill.jpg
Pages where the terms "Historic Textbook" and "Historic Embryology" 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 and interpretations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

The Human Conceptus during the First Two Weeks of Gestation

John Charles Rock
John Charles Rock (1890-1984)
Arthur T Hertig
Arthur Tremain Hertig (1904-1990)

John Rock and Arthur T . Hertig


Free Hospital for Women, Brookline, Mass., Departments of Pathology, Obstetrics and Gynecology, Harvard Medical School and Department of Embryology, Carnegie Institution of Washington.

Introduction

The youngest human embryo was conceived, not naturally in the Fallopian tube of its mother, but in a watch glass in the laboratory. It was the last of a series of almost 800 eggs. all recovered from ovarian tissue, of which 138 were exposed by Mrs. Miriam F. Menkin and me to human spermatozoa in about 1 c.c. of Ringer-Locke's Solution. After a pencil drawing was made of this two-cell individual, it was regrettably lost. A few days later , however, another egg similarly treated began its personal existence by changing from a single cell that had been part of the maternal tissue into a two-cell autonomous structure (Fig. 1, A.). Because none had been seen to do likewise without spermatozoa, and there were spermatozoa within the zona pellucida, it was probable that this two-cell organism is the result of conjugation of the male and female components. Some weeks later, similar procedures resulted in the production of two ova in the three-cell stage.





Cite this page: Hill, M.A. (2019, August 20) Embryology Paper - The human conceptus during the first two weeks of gestation. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_The_human_conceptus_during_the_first_two_weeks_of_gestation

What Links Here?
© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G