[Perturbations of the implantation, the foetal growth and the foetal morphogenesis after ligatures of uterine artery terminal vessels in the rabbit (author's transl)].

Uterine terminal vessels are ligatured in the rabbit. These reduction of the utero-placental blood supply during the pregnancy is one "intra-uterine growth retardation" factor. These I.U.G.R. rabbits shown one important decrease of their total cellular population. More the intervention is executed near the term more the cerebral mass is affected. At the beginning of the pregnancy one teratogenic effect is superadded to the I.U.G.R. effect. Modification of the blood supply before pregnancy with the same proceeding product on decrease of the implantation, one I.U.G.R. effect and one teratogenic effect.