Probe:	Tbx4 cDNA3
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS4: blastocyst	Absent

Structure	Level	Pattern	Image	Note
TS11: allantois	Present			Expression is present exclusively in the allantois.
TS11: embryo	Absent

Structure	Level	Pattern	Image	Note
TS15: genitourinary system	Present	Regionally restricted	5G	Expression is present in the genital papilla.
TS15: trunk	Present	Regionally restricted	5G	Expression is present in the body wall.

Structure	Level	Pattern	Image	Note
TS20: heart atrium	Present
TS20: sinus venosus	Present
TS20: heart ventricle	Absent
TS20: retina	Absent
TS20: mandibular process mesenchyme	Present
TS20: maxillary process mesenchyme	Absent
TS20: trunk mesenchyme	Present	Regionally restricted		Expression is present in the mesenchyme surrounding the length of the trachea.
TS20: lung mesenchyme	Present
TS20: lung epithelium	Absent
TS20: body wall	Present	Regionally restricted		Expression is present in the body wall of the thorax.
TS20: genital tubercle	Present	Regionally restricted		Expression is present in the genital papilla.
TS20: gonad	Absent			There is no expression in the genital ridge.
TS20: gut mesenchyme	Absent			There is no expression in the gut muscle.
TS20: metanephros	Absent
TS20: myotome	Absent
TS20: dorsal root ganglion	Absent
TS20: trigeminal ganglion	Absent
TS20: hindbrain	Absent
TS20: neurohypophysis infundibulum	Absent
TS20: neural retinal epithelium	Absent
TS20: pinna	Absent
TS20: rib pre-cartilage condensation	Absent
TS20: tongue muscle	Absent