Probe:	PECAM-1 probe1
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS11: blood island	Present		6A
TS11: embryo	Absent		6A

Structure	Level	Pattern	Image	Note
TS12: cardiovascular system	Present		6B	Expression in a pattern consistent with it being expressed by the endothelium of the forming vasculature.
TS12: dorsal aorta	Present	Regionally restricted	6B	Expression in the endothelial cells.
TS12: heart	Present	Regionally restricted	6B	Expression in the endothelial cells.
TS12: anterior pro-rhombomere neural fold	Present		6B	Expression in the neural folds of the developing head process.
TS12: future hindbrain neural fold	Present		6B	Expression in the neural folds of the developing head process.
TS12: future midbrain neural fold	Present		6B	Expression in the neural folds of the developing head process.
TS12: future prosencephalon neural fold	Present		6B	Expression in the neural folds of the developing head process.
TS12: posterior pro-rhombomere neural fold	Present		6B	Expression in the neural folds of the developing head process.

Structure	Level	Pattern	Image	Note
TS14: cardiovascular system	Present		6C
TS14: arterial system	Present		6C	Expression in the developing vasculature inluding the second and third branchial arches, ventricles and atria of the heart and intersegmental arteries.
TS14: common atrial chamber	Present		6C	Expression in the developing vasculature inluding the second and third branchial arches, ventricles and atria of the heart and intersegmental arteries.
TS14: dorsal aorta	Present		6C	Expression in the developing vasculature inluding the second and third branchial arches, ventricles and atria of the heart and intersegmental arteries.
TS14: heart	Present		6C	Expression in the developing vasculature inluding the second and third branchial arches, ventricles and atria of the heart and intersegmental arteries.
TS14: primitive ventricle	Present		6C	Expression in the developing vasculature inluding the second and third branchial arches, ventricles and atria of the heart and intersegmental arteries.