title: [DDT and the germ cell population of embryonic bird gonads. Treatment of the eggs at different incubation stages].
abstract: According to the date of treatment by DDT of chick and quail eggs, the germ population of embryonic gonads is more or less reduced. Administered before incubation, the pesticide provokes a strong decrease in the number of gonocytes: at a later stage (the beginning or the end of germ migration), the DDT does not exert a significant effect. On the other hand, in all the cases, the rate of degenerative germ cells is superior to the control one.
mesh_terms: D000818:Animals; D002642:Chick Embryo / Q000187:drug effects*; D003370:Coturnix / Q000196:embryology*; D003634:DDT / Q000494:pharmacology*; D003864:Depression, Chemical; D005260:Female; D005854:Germ Cells / Q000187:drug effects*; D006066:Gonads / Q000166:cytology / Q000187:drug effects / Q000196:embryology; D010063:Ovum / Q000187:drug effects; D011784:Quail / Q000196:embryology*; D013997:Time Factors
chemical_list: D003634:DDT
vernacular_title: DDT et population germinale des gonades embryonnaires d'oiseau. Traitement des aeufs à divers stades de l'incubation