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Appearance of Primordial Germ Cells in Young Chick Blastoderms Cultured in vitro

Lien A. Sutasurya, Sadao Yasugi, Takuya Mizuno

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Abstract

Appearance of primordial germ cells (PGCs) in young chick blastoderms was investigated by the cultivation of only the epiblast or hypoblast. Presumptive PGCs exist in the epiblast before primitive-streak formation. They translocate gradually to the lower layer during early stages of primitive-streak formation, though substantial number of presumptive PGCs remain in the upper layer. The existing primary hypoblast under the epiblast is dispensable for the further differentiation of the PGCs.

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Appearance of primordial germ cells (PGCs) in young chick blastoderms was investigated by the cultivation of only the epiblast or hypoblast. Presumptive PGCs exist in the epiblast before primitive-streak formation. They translocate gradually to the lower layer during early stages of primitive-streak formation, though substantial number of presumptive PGCs remain in the upper layer. The existing primary hypoblast under the epiblast is dispensable for the further differentiation of the PGCs.

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Available abstract

Appearance of primordial germ cells (PGCs) in young chick blastoderms was investigated by the cultivation of only the epiblast or hypoblast. Presumptive PGCs exist in the epiblast before primitive-streak formation. They translocate gradually to the lower layer during early stages of primitive-streak formation, though substantial number of presumptive PGCs remain in the upper layer. The existing primary hypoblast under the epiblast is dispensable for the further differentiation of the PGCs.

Key concepts: Germ, In vitro, Biology, Cell biology, Germ layer, Andrology, Anatomy, Genetics

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