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A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).

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Tree Number(s): A16.710

MeSH Unique ID: D010920

Entry Terms:

  • Placentas
  • Placentome
  • Placentomes
  • Placentoma, Normal

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