Accueil >  Term: blood-placenta barrier
blood-placenta barrier

Physiological interface between maternal and fetal blood circulations that filters out some substances which could harm the fetus while favoring the passage of others such as nutrients: many fat soluble substances such as alcohol are not filtered out and several types of virus can also cross this barrier.

Note: The effectiveness of the interface as a barrier varies with species and different forms of placentation.

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  • Walter Lane
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