Histogenesis of degenerative processes in the normal mature placenta.

摘要: Abstract The umbilical cords and placentas obtained from 50 normal pregnancies have been studied by various histochemical techniques used in previous investigations dealing with degenerative processes adult vessels. It has shown that the basic structure of placental arteries is different particularly regard to paucity or complete absence elastic elements as well state development medial muscle. further demonstrated which occur term placenta are apparently not on a vascular basis, but rather basis intrinsic connective-tissue changes probably due hormonal influences. Such should therefore be considered infarcts, despite certain superficial gross microscopic resemblances latter. A fibrinoid material deposited progressively increasing amounts within villi appears constitute process such pseudoinfarcts develop.