File talk:Chicken heart 3D reconstruction from sections.jpg
From Embryology
yellow - is used to indicate both the cardiac cushions after invasion with mesenchyme, but also for mesoderm that is of unclear splanchnic or somatic descent.
blue - splanchnic mesoderm
orange - cardiovascular lumen
green - expression of Connexin 40
red - somatic mesoderm
light blue - lateral mesocardium
