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placenta p34

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Development du <strong>placenta</strong><br />

LIF<br />

Implantation<br />

Morula<br />

J4 PC<br />

trophoblaste<br />

blastocyste<br />

Bouton embryonnaire<br />

J6-J12 PC<br />

Villosités primaires<br />

couche interne : cytotrophoblaste<br />

couche externe : syncytiotrophoblaste<br />

J12 PC<br />

Mesoderme<br />

extraembryonnaire<br />

VV<br />

VA<br />

endoderme<br />

ectoderme<br />

CA<br />

VV<br />

J18-J40 PC<br />

Tube digestif primitif<br />

allantoïde<br />

Canal vitellin ou<br />

omphalomésentérique

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