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PGE2 and PGF2α concentrations in the umbilical cord as a function of gestational age including preterm and term gestations with preeclampsia. Umbilical cord PGE2 and PGF2α concentrations increased with advancing gestational age until 36 weeks (PGE2: rho = 0.59, p<0.001; PGF2α: rho = 0.39, p=0.01), but not after 36 weeks (PGE2: rho = −0.1, p=0.5; PGF2α: rho = −0.2, p=0.2).
