| We selected principally trophoblastic placental tissue with no signs of calcification, avoiding the decidua basalis and corionic plate. |
| Although the exact etiology for placenta accreta and increta is not known, it is thought that damage to the decidua basalis may lead to abnormal placentation and its sequelae. |
| There were large amounts of polarizable foreign body material contained within the membranes and maternal decidua, without associated inflammation or tissue reaction. |
| This ovum, though probably not more than thirteen days old, was completely enclosed by a decidua reflexa. |
| Folds of this nature, which are specially developed in Man and Apes, are known as a decidua reflexa. |
| The chorion frondosum, together with the decidua serotina, gives rise to the placenta. |
