| vitellogene | <zoology> A gland secreting the yolk of the eggs in trematodes, turbellarians, and some other helminths. See: Vitellus, and -gen. Source: Websters Dictionary (01 Mar 1998) |
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| vitellogenesis | The production and storage of yolk in the oocyte which is usually initiated after the first meiotic division. (12 Dec 1998) |