Barrier

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Related to placental barrier: Blood brain barrier

Barrier

1. See: Trade barrier.

2. See: Barrier Option.
References in periodicals archive ?
These pollutants also can interfere with the function of the brain and endocrine system by penetrating the placental barrier and scrambling the instructions of the naturally produced chemical messengers.
Before birth, babies make few antibodies; the mother's antibodies pass through the placental barrier and protect the child from disease before birth and for some time afterward.
Women who want to get pregnant and are trying to do so should remember that everything that goes into the mouth crosses the placental barrier.
Both animal and human studies have shown that BPA can pass through the placental barrier and that fetuses are likely to be exposed to similar (if not higher) levels of BPA as those of mothers, explained the researchers.
The authors report, that polystyrene particles up to 240 nm in diameter were able to cross the placental barrier without affecting the viability of the placental explant.
Fetomaternal hemorrhage (FMH) during pregnancy or subsequent isoimmunization, caused by a breach of the placental barrier, could lead to an adverse perinatal outcome (1, 2).
Anesthetics cross the placental barrier easily So the question is, Does occupational gas exposure influence child development?
Cocaine is lipid soluble, easily crosses the placental barrier and the fetal blood brain barrier and tends to be sequestered in the brain.
The report also charges that mercury can cross the placental barrier into the tissue of a developing fetus, and it implicates the metal in kidney impairment, loss of immune function, antibiotic resistance and lowered fertility.