Keywords: 8w3d with umbilical cord.gif Vaginal ultrasonography of human embryo of a gestational age of 8 weeks and 3 days The embryo is surrounded by the thin membranes of the amniotic sac and is attached to the placenta by the umbilical cord 2014-04-10 own Mikael Häggström gallery of 2014 cc-zero Uploaded with UploadWizard Animated ultrasonography of human embryo Vaginal ultrasonography |