| vitelline cyst |
A congenital cyst of the gastrointestinal canal. Lined with ciliated epithelium, it is the remains of the omphalomesenteric duct.
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| vitelline nucleus |
Nucleus formed by union of male and female pronuclei within the vitellus; a part of the cytoplasm of an ovum in which the initial process of accumulation of food supplies is probably located. SYN: yolk nucleus .
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