vitelline duct (PLATY: Turbellaria) One of paired ducts connecting the vitelline glands to the common vitelline duct.
vitelline membrane A membrane enclosing eggs of invertebrates located within an egg shell.
vitellogenesis n. [L. vitellus, yolk; Gr. genesis, beginning] The production of yolk.
vitellophages, vitellophags n.pl. [L. vitellus, yolk; Gr.
phagein, to eat] Cells involved with the breakdown of the yolk at all stages of development. vitellophagic a.
vitellus n. [L. vitellus, yolk] The yolk of an egg.
vitreous a. [L. vitrum, glass] Glassy; transparent.
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