umbilical vesicle
noun
: the yolk sac of a mammalian embryo usually having the form of a fluid-filled pouch, corresponding to the yolk sac of an oviparous vertebrate, and having a transitory connection with the digestive tract by way of the omphalomesenteric duct
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“Umbilical vesicle.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/umbilical%20vesicle. Accessed 29 Nov. 2024.
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