Fig. 3

Puppy #5. Cross-sectional view through the large artery at the level of the pulmonary trunk division. The ascending aorta, the pulmonary trunk, the hypoplastic right pulmonary artery, a small fragment of the atrium, and the short, initial segment of the hypoplastic departure of the left pulmonary artery are visible. LA left atrium, PT pulmonary trunk, RPA right pulmonary artery, LPA left pulmonary artery, AAo ascending aorta.