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The serum contents of Ca, Mg, inorg P and Cl of the maternal and umbilical blood were determined in the normal delivery cases. The results obtained are as follows. The serum Ca levels of the maternal and fetal blood (20 mother-fetus pairs) are 9.99 ±1.02 mg/dl, 12.21 士0.93 mg/dl, respectively. Thus, the fetal serun Ca content is higher than that... |