Probe:	MLC3F-B
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS21: heart atrium	Strong		4a	Higher expression levels in the atria than the ventricles.
TS21: heart left ventricle	Weak		4a	Low level expression in the trabeculated region but not in the compact myocardium.
TS21: skeletal muscle	Weak		4a
TS21: atrioventricular canal	Strong		4a

Structure	Level	Pattern	Image	Note
TS20: atrioventricular canal	Strong		4c
TS20: heart atrium	Strong		4c
TS20: heart left ventricle	Weak	Non-Uniform	4c	Expression is stronger in the left than the right. Transcripts accumulate more in the ventricular trabeculations than the compact myocardium.
TS20: heart right ventricle	Weak	Non-Uniform	4c	Expression is stronger in the left than the right. Transcripts accumulate more in the ventricular trabeculations than the compact myocardium.

Structure	Level	Pattern	Image	Note
TS20: heart left ventricle	Weak	Non-Uniform	4d	Expression is stronger in the left than the right. Transcripts accumulate more in the ventricular trabeculations than the compact myocardium.
TS20: heart right ventricle	Weak	Non-Uniform	4d	Expression is stronger in the left than the right. Transcripts accumulate more in the ventricular trabeculations than the compact myocardium.

Structure	Level	Pattern	Image	Note
TS20: vena cava	Present	Regionally restricted	4e	Expressed in myocardial cells of the superior caval veins.
TS20: atrioventricular canal	Strong		4e
TS20: heart atrium	Strong		4e
TS20: heart left ventricle	Present		4e	Expression is stronger in the left than the right.
TS20: heart right ventricle	Present		4e	Expression is stronger in the left than the right.

Structure	Level	Pattern	Image	Note
TS26: heart ventricle	Present	Non-Uniform		Expression was excluded from the compact myocardium.
TS26: heart atrium	Strong