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THE FUTILITY OF THE HUMAN YOLK SAC

โœ Scribed by Lewis, F. T.

Book ID
121118158
Publisher
American Association for the Advancement of Science
Year
1922
Tongue
English
Weight
76 KB
Volume
55
Category
Article
ISSN
0036-8075

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๐Ÿ“œ SIMILAR VOLUMES

THE HUMAN YOLK SAC
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## Abstract Ultrasound scanning in early pregnancy sometimes reveals a 2โ€“5โ€mm spheric structure lying adjacent to the fetus. The occurrence of this structure was studied in 60 consecutive ultrasound examinations. In the 7th to 9th weeks the sphere was seen in 19 of 22 examinations, and in the 10th