Probe:	Gax probe1
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS20: atrium cardiac muscle	Present		3A	Exprssion in atrial and in both compact and trabecular myocytes of the ventricle.
TS20: compact myocardium	Present		3A	Exprssion in atrial and in both compact and trabecular myocytes of the ventricle.
TS20: trabecular myocardium	Present		3A	Exprssion in atrial and in both compact and trabecular myocytes of the ventricle.

Structure	Level	Pattern	Image	Note
TS22: heart atrium	Absent		3B	Expression reduced to background level in atrum and ventricle.
TS22: heart ventricle	Absent		3B	Expression reduced to background level in atrum and ventricle.
TS22: lung	Strong		3B

Structure	Level	Pattern	Image	Note
TS23: compact myocardium	Present		3C	Expression again detectable, limited to the compact layer of ventricles.
TS23: atrium cardiac muscle	Absent		3C	No expression in atrial myocytes.
TS23: esophagus muscularis	Present	Regionally restricted	3C	Expression in smooth muscle of esophagus.
TS23: lung	Present	Regionally restricted	3C	Expression in smooth muscle of lung.

Structure	Level	Pattern	Image	Note
TS17: somite	Present	Regionally restricted	7A	Expression in differentiating somites, in more cells than the myotome.

Structure	Level	Pattern	Image	Note
TS20: forelimb digit	Present	Regionally restricted	7C	Expression in forelimb bud at edges of three developing digital cartilages.

Structure	Level	Pattern	Image	Note
TS19: myotome	Present	Regionally restricted	7D	Expression in skeletal muscle cells in developing myotomes.
TS19: stomach mesenchyme	Present	Regionally restricted	7D	Expression in differentiation visceral smooth muscle of stomach.

Structure	Level	Pattern	Image	Note
TS23: forelimb muscle	Present		7F	Expression in skeletal muscle of forelimb.

Structure	Level	Pattern	Image	Note
TS15: neural tube	Present	Graded	7G	Expression along a gradient within the neural tube.
TS15: 1st branchial arch	Present		7G
TS15: 2nd branchial arch	Present		7G

Structure	Level	Pattern	Image	Note
TS22: lung mesenchyme	Present		7H
TS22: diaphragm	Present	Regionally restricted	7H	Expression in diaphragm skeletal muscle.
TS22: intercostal muscle	Present	Regionally restricted	7H	Expression surrounding rib cartilages.

Structure	Level	Pattern	Image	Note
TS21: tongue	Present		7I
TS21: nasal epithelium	Present	Regionally restricted	7I	Expression in nasal sinus epithelium.
TS21: oral cavity	Present	Regionally restricted	7I	Expression around oral cavity.