What is the meaning of umbilical vesicle?

Membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional.
- synonyms: yolk sac, vitelline sac, vesicula umbilicus

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APA	WordNet. (2010). umbilical vesicle. Retrieved September 23, 2026, from http://smartdefine.org/umbilical_vesicle/definitions/1318025
Chicago	WordNet. 2010. "umbilical vesicle" http://smartdefine.org/umbilical_vesicle/definitions/1318025 (accessed September 23, 2026).
Harvard	WordNet 2010, umbilical vesicle, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/umbilical_vesicle/definitions/1318025>.
MLA	WordNet. "umbilical vesicle" 23 October 2010. Web. 23 September 2026. <http://smartdefine.org/umbilical_vesicle/definitions/1318025>

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