Reporter:	lacZ
	Direct Detection

Structure	Level	Pattern	Image	Note
TS11: amnion	Present		2A	Before heart tube formation, expression in amnion and chorion.
TS11: chorion	Present		2A	Before heart tube formation, expression in amnion and chorion.

Structure	Level	Pattern	Image	Note
TS12: primitive heart tube	Present		2B	At linear heart tube stage, expresson spcific to heart and venous limbs.
TS12: sinus venosus	Present		2B	At linear heart tube stage, expresson spcific to heart and venous limbs.

Structure	Level	Pattern	Image	Note
TS12: primitive heart tube	Present		2C	At linear heart tube stage, expresson spcific to heart and venous limbs.
TS12: sinus venosus	Present		2C	At linear heart tube stage, expresson spcific to heart and venous limbs.

Structure	Level	Pattern	Image	Note
TS12: primitive heart tube	Present		2D
TS12: gut	Absent		2D
TS12: neural plate	Absent		2D

Structure	Level	Pattern	Image	Note
TS13: heart	Present		2E	As heart begins to loop, expession remains specific to heart and venous limbs.
TS13: sinus venosus	Present		2E	As heart begins to loop, expession remains specific to heart and venous limbs.

Structure	Level	Pattern	Image	Note
TS13: primitive ventricle	Present		2F	Expression in both future ventricles.

Structure	Level	Pattern	Image	Note
TS15: heart	Present		2G	In looped heart, expression remains confined to heart.

Structure	Level	Pattern	Image	Note
TS15: heart atrium	Present		2H	Expression in all cardiac chambers and in outflow tract.
TS15: outflow tract	Present		2H	Expression in all cardiac chambers and in outflow tract.
TS15: primitive ventricle	Present		2H	Expression in all cardiac chambers and in outflow tract.

Structure	Level	Pattern	Image	Note
TS17: heart	Present		2J , 2I
TS17: future spinal cord	Present	Regionally restricted	2I , 2J	Expression in ventral part of spinal cord.

Structure	Level	Pattern	Image	Note
TS17: heart atrium	Present	Regionally restricted	2K	Expression in right ventricle, left ventricle, right atrium and outflow tract.
TS17: outflow tract	Present	Regionally restricted	2K	Expression in right ventricle, left ventricle, right atrium and outflow tract.
TS17: primitive ventricle	Present	Regionally restricted	2K	Expression in right ventricle, left ventricle, right atrium and outflow tract.

Structure	Level	Pattern	Image	Note
TS19: midbrain	Weak		2N , 2M , 2L	Low level of expression in midbrain.
TS19: future spinal cord	Present		2L , 2N , 2M	Expression persists in heart and spinal cord.
TS19: heart	Present		2L , 2N , 2M	Expression persists in heart and spinal cord.

Structure	Level	Pattern	Image	Note
TS23: cardiac muscle tissue	Present	Widespread	3E	Expression throughout myocardium.

Structure	Level	Pattern	Image	Note
TS23: cardiac muscle tissue	Present		3F

Structure	Level	Pattern	Image	Note
TS23: cardiac muscle tissue	Present		3G