1. The transplacental passage of the DENA apparently accelerated the latent potentiality for the formation of pulmonary adenomas.

2. Placental: 1 adj pertaining to or having or occurring by means of a placenta “all mammals except monotremes and marsupials are placental mammals” Synonyms: transplacental occurring through or by way of the placenta Antonyms: Aplacental having no placenta n mammals having a placenta; all mammals except monotremes and marsupials Synonyms:

3. Five diseases of pregnancy are analyzed which are at least partly characterized by impaired transplacental transport: a) abruptio placentae, resulting in acute respiratory insufficiency; b) intrauterine growth restriction combined with absent or reverse flow in the umbilical arteries, resulting in severe chronic nutritional insufficiency, with the risk of acute respiratory decompensation; c) intrauterine growth restriction combined with preserved flow in the umbilical arteries, resulting in chronic nutritional insufficiency, d) premature delivery following maturitas praecox of the placenta, in a subset of cases complicated by chronic nutritional insufficiency; and e) postterm delivery following persistent immaturity of the placenta, bearing the risk of acute respiratory decompensation.