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A tubular connection between the yolk sac and the digestive tract of a developing embryo.
- ‘During this phase of development, the midgut remains attached to the yolk stalk or vitelline duct.’
- ‘The yolk stalk is also called the umbilical duct, vitelline duct, or oomphalomesenteric duct.’
- ‘The yolk stalk is the narrow connection between the endoderm of the embryo and the yolk sac.’
- ‘In viviparous sharks, the yolk stalk that connects the embryo to the yolk grows long in the uterus.’
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