From where do the placenta and umbilical cord develop?
outer cells of the blastocyst
inner ce...
Chemistry, 04.03.2021 20:20 NidaFurqan
From where do the placenta and umbilical cord develop?
outer cells of the blastocyst
inner cells of the blastocyst
directly from the uterus
directly from the ovary
Answers: 2
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