Balbiani's vitelline body
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yolk nucleus — Intensely osmiophilic body located near the nucleus; vitelline body; Balbiani s body … Dictionary of invertebrate zoology
yolk nucleus — a special area of the cytoplasm of an oocyte in which the synthetic activities leading to the accumulation of food supplies in the oocyte are apparently initiated; called also vitelline body and Balbiani n. or body … Medical dictionary