Heart cross section with patent ductus ateriosus
Original uploader was <a href="https://en.wikipedia.org/wiki/en:User:BrownCow" class="extiw" title="w:en:User:BrownCow">BrownCow</a>.
2012-04-02
<a class="external free" href="https://en.wikipedia.org/wiki/File:Patent_ductus_arteriosus.jpg">http://en.wikipedia.org/wiki/File:Patent_ductus_arteriosus.jpg</a>