[Method of damaging rabbit myocardium during the intrauterine period].

The author describes a method used for injury of rabbit fetuses myocardium on the 20-24th days of pregnancy. The abdominal cavity and the uterus of pregnant rats were incised and the amniotic sac and thoracic wall of the fetus -- punctured, thus injuring the heart. Two methods were used: in the first case the amniotic sac was completely drawn out from the uterine cavity, and in the other case -- it remained in the uterus and was punctured through the uterine incision. If the operation was not followed by abortion the animals gave birth to viable full-term rabbits.