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The human placental barrier at the end of normal and during pathological pregnancy

✍ Scribed by A. I. Brusilovskii


Publisher
Springer US
Year
1970
Tongue
English
Weight
254 KB
Volume
70
Category
Article
ISSN
0007-4888

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## Abstract A range‐gated Doppler ultrasound system combined with a real‐time imaging system was used to determine arterial blood velocity values from the fetal and placental ends of the umbilical cord in 269 normal pregnancies between 17 and 40 weeks, menstrual age. The systolic–diastolic ratio (S