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Article

The human placenta becomes haemochorial at the 13th week of pregnancy

1 Jan 1992

Abstract excerpt

Histological specimens of recent implantation sites are the basis of our current concept on human embryo implantation and placental development. In the Carnegie Collection maternal red blood cells were detected early in the primitive intervillous space (10th-12th day after conception). These cells were localized to the trophoblastic lacunae and originated from distended peripheral maternal sinusoids (Kaufmann,...

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Share to Maternal and fetal healthcare
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Identifiers

PMID: 1445791
DOI: 10.1387/ijdb.1445791

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