During weeks 9-12 of fetal development ? A- bone marrow begins to assume erythrocyle production b- meconium begins to accumlate in the intestines d- the spinal cord begins to be myclinated c- surfactant production begins in the fetal lungs
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During weeks $9-12$ of fetal development, ____________ a. bone marrow begins to assume erythrocyte production b. meconium begins to accumulate in the intestines c. surfactant production begins in the fetal lungs d. the spinal cord begins to be myelinated
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