Probe:	Robo2 cDNA5
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS13: heart	Strong	Regionally restricted	2E	Expression is in the venous pole of the forming heart tube.
TS13: neural tube	Strong		2E
TS13: primitive ventricle cardiac muscle	Absent		2E

Structure	Level	Pattern	Image	Note
TS15: branchial arch ectoderm	Weak		2F
TS15: heart	Weak		2F
TS15: notochord	Weak		2F
TS15: primitive ventricle cardiac muscle	Absent		2F

Structure	Level	Pattern	Image	Note
TS17: common atrial chamber left part	Present		2G
TS17: common atrial chamber right part	Present		2G
TS17: primitive ventricle cardiac muscle	Absent		2G

Structure	Level	Pattern	Image	Note
TS20: arterial system	Present	Regionally restricted	2H	Expression is in the endocardium of the great arteries.
TS20: ventricle cardiac muscle	Absent		2H

Structure	Level	Pattern	Image	Note
TS13: heart	Present	Regionally restricted	S2A	Expression is in the venous pole of the forming heart tube.

Structure	Level	Pattern	Image	Note
TS13: heart	Absent		S2B