Antibody:	anti-beta2 subunit
Detection system:	Secondary antibody coupled to alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS28: heart	Present	Uniform	2c	Homogeneous expression in the myocardium.
TS28: aorta	Absent		2c	Absent in smooth muscle cells.
TS28: pulmonary artery	Absent		2c	Absent in smooth muscle cells.

Structure	Level	Pattern	Image	Note
TS15: cardiac muscle tissue	Weak

Structure	Level	Pattern	Image	Note
TS17: atrioventricular canal	Present		4b
TS17: common atrial chamber cardiac muscle	Present		4b
TS17: outflow tract	Present		4b
TS17: primitive ventricle cardiac muscle	Present		4b

Structure	Level	Pattern	Image	Note
TS20: cardiac muscle tissue	Present		4e

Structure	Level	Pattern	Image	Note
TS20: cardiac muscle tissue	Present		4k , 4h

Structure	Level	Pattern	Image	Note
TS23: atrium cardiac muscle	Present	Uniform	5a , 5c
TS23: ventricle cardiac muscle	Present	Uniform	5a , 5c
TS23: heart	Present	Regionally restricted	5c , 5a	Expression is weak in the ventricular conduction system.

Structure	Level	Pattern	Image	Note
TS23: atrium cardiac muscle	Present	Uniform	5e
TS23: ventricle cardiac muscle	Present	Uniform	5e
TS23: heart	Weak	Regionally restricted	5e	Expression is reduced in the atrioventricular node and the bundle of His.

Structure	Level	Pattern	Image	Note
TS26: heart	Present	Uniform	5g