Examples: after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta
trophoblast (English)├── -blast (English)│ └── βλαστός (Ancient Greek (to 1453))│ └── βλαστάνειν (Ancient Greek (to 1453))└── tropho- (English) └── τροφή (Ancient Greek (to 1453)) └── τρέφω (Ancient Greek (to 1453))
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