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Embryology of chicken; 18 hours after fertilization
Legend:
1 proamnion
2 area opaca
3 area pellucida
4 embryonal area
5 neural plate
6 notochord
7 Hensen's node
8 primitive streak
English name: Common chicken
Scientific name: Gallus domesticus
Familia: Phasianidae/Meleagridae
Classis: Aves
Phylum: Chordata (subphylum vertebrata)
Regnum: Animalia
