Placenta · 1988 · 42 citations · 20 references
Life SciencesObstetricsPhysiologyMaternal-fetal MedicineDrug PermeationMembrane PermeabilityPlacental BiologyPlacental DevelopmentPlacental PhysiologyPlacental Barrier PermeabilityPlacental PermeabilityPlacental Transport Mechanisms
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Louis B. Flexner, D. B. Cowie, Louis M. Hellman et al. · American Journal of Obstetrics and Gynecology · 1948 · 163 citations