Antibody:	anti-PECAM-1
Detection system:	Biotinylated secondary antibody/[Strept]avidin coupled to horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS26: coronary artery	Present		4A

Structure	Level	Pattern	Image	Note
TS26: coronary vascular plexus	Present	Regionally restricted	4B	The coronary arterial vasculature is absent in the conditional knockout mice. A primitive vascular plexus was observed.

Structure	Level	Pattern	Image	Note
TS26: cardiac vein	Present		4C

Structure	Level	Pattern	Image	Note
TS26: cardiac vein	Present		4D	The coronary veins were well developed in the conditional mutant.

Structure	Level	Pattern	Image	Note
TS26: coronary artery	Present	Regionally restricted	S9A	The left coronary artery connects to the aorta.

Structure	Level	Pattern	Image	Note
TS26: coronary artery	Present		S9B

Structure	Level	Pattern	Image	Note
TS26: coronary artery	Present		S9C

Structure	Level	Pattern	Image	Note
TS26: coronary vascular plexus	Present		S9D	The aorta of conditional mutants is connected to a primitive vascular plexus.

Structure	Level	Pattern	Image	Note
TS26: coronary vascular plexus	Present		S9E

Structure	Level	Pattern	Image	Note
TS26: coronary vascular plexus	Present		S9F

Structure	Level	Pattern	Image	Note
TS21: coronary vascular plexus	Present		S11WT Dorsal view left , S11WT Ventral view left	The normal remodeling of the arterial portions of the coronary vascular plexus starts at the aorta from where it proceeds in a proximo-distal direction toward the ventricular apex.

Structure	Level	Pattern	Image	Note
TS21: coronary vascular plexus	Present		S11epiBC-KO Dorsal view left , S11epiBC-KO Ventral view left	No alteration in the vascular plexus of young embryos was observed in the conditional mutant.

Structure	Level	Pattern	Image	Note
TS21: coronary vascular plexus	Present		S11WT Ventral view right , S11WT Dorsal view right	The normal remodeling of the arterial portions of the coronary vascular plexus starts at the aorta from where it proceeds in a proximo-distal direction toward the ventricular apex.

Structure	Level	Pattern	Image	Note
TS21: coronary vascular plexus	Present		S11epiBC-KO Dorsal view right , S11epiBC-KO Ventral view right	No alteration in the vascular plexus of young embryos was observed in the conditional mutant.