Blood cells and antibodies pass freely across the placenta.
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Q31: Human chorionic gonadotropin is secreted from cells
Q32: The process by which the three primary
Q33: The outermost extraembryonic membrane that eventually helps
Q34: Gastrulation results in the formation of a(n)
A)
Q35: When epiblast cells travel through the primitive
Q37: Presence of hCG in a woman's urine
Q38: Which pathogen (within the mother) is most
Q39: Which structure develops directly into a bilaminar
Q40: The germ layer between the ectoderm and
Q41: The process of organogenesis begins in the
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