hematopoietic system
• absence of hematopoietic colonies in fetal livers, vitelline and umbilical arteries
• no fetal liver hematopoiesis
• no yolk sac hematopoiesis
|
embryo
• absence of hematopoietic colonies in fetal livers, vitelline and umbilical arteries
• no fetal liver hematopoiesis
• no yolk sac hematopoiesis
|