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Yolk
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A close-up of a raw chicken egg yolk resting on a flat surface, surrounded by clear egg white. Labeled diagram of an amniotic egg showing the embryo surrounded by membranes including the amnion, chorion, yolk sac, and allantois, with albumin, amniotic fluid, yolk, and shell also identified. Labeled diagram of an animal egg cut in half, showing structural components including the outer shell layers, inner and outer membranes, yolk with its membrane and germinal disc, and albumen with thick and thin egg white, chalaza, and chalaziferous layer.
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Ceviche. Peruvian ceviche (sebiche). Raw seafood dish with lime, cilantro, peppers, plantains. Cuisine, food
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Slices of lemon pie topped with meringue.
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Chef tossing vegetables in a frying pan over a burner (skillet, food).
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Male muscle, man flexing arm, bicep curl.
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Yolk: References & Edit History

Article Contributors

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Article title updated for style. Nov 06, 2026
Invalidated site: National Center for Biotechnology Information - The mechanism and pattern of yolk consumption provide insight into embryonic nutrition in Xenopus. Nov 23, 2018
Add new Web site: National Center for Biotechnology Information - The mechanism and pattern of yolk consumption provide insight into embryonic nutrition in Xenopus. Sep 19, 2018
Media added. Feb 03, 2010
Article added to new online database. Jul 20, 1998
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