Paper - The human conceptus during the first two weeks of gestation
|Embryology - 9 Dec 2023 Expand to Translate|
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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
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The Human Conceptus during the First Two Weeks of Gestation
Free Hospital for Women, Brookline, Mass., Departments of Pathology, Obstetrics and Gynecology, Harvard Medical School and Department of Embryology, Carnegie Institution of Washington.
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. (2023, December 9) 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
- © Dr Mark Hill 2023, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G