Fig. 2
Elastic fiber formation of CoA and the ductus arteriosus. Upper panel Elastic fiber formation in the tissue of CoA with hypoplastic left heart syndrome (1-month-old). Lower panel Magnified images of upper panel. Elastic fiber formation was impaired in the ductal side and elastic fibers were abundantly formed in the aortic side in CoA tissue. Scale bars 100 μm. Elastic fibers were visualized by elastica–van Gieson stain as previously described [44]