Probe:	Tbeta10 cDNA2
Probe preparation:	Antisense labelled with P33 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS15: embryo mesenchyme	Strong	Regionally restricted	2A	Expression is in most mesenchymal regions.
TS15: 1st branchial arch mandibular component mesenchyme	Present		2A
TS15: 1st branchial arch maxillary component mesenchyme	Present		2A
TS15: head mesenchyme	Present		2A
TS15: limb mesenchyme	Present		2A
TS15: trunk sclerotome	Present		2A
TS15: future spinal cord	Weak		2A
TS15: otocyst	Weak		2A

Structure	Level	Pattern	Image	Note
TS15: skeleton	Strong	Regionally restricted	2C , 2B	Expression is in skeletal mesenchyme.
TS15: future hindbrain	Weak	Regionally restricted	2B , 2C	Expression is in the mantle layer in the basal plate of the caudal medulla oblongata.
TS15: neural tube lateral wall	Weak	Regionally restricted	2C , 2B	Expression is in the rostral spinal cord in the region of differentiating motoneurons.
TS15: spinal ganglion	Weak	Regionally restricted	2C , 2B	Expression is in the rostral spinal ganglia.
TS15: endocardial cushion	Moderate		2B , 2C	Low to moderate expression.

Structure	Level	Pattern	Image	Note
TS17: endocardial cushion	Present		2E , 2D
TS17: head mesenchyme	Present		2E , 2D
TS17: cranial ganglion	Moderate	Scattered	2E , 2D	Low to moderate expression in the vestibular ganglion.
TS17: hindbrain mantle layer	Strong	Regionally restricted	2D , 2E	Expression is in the mantle layer of the basal plate of the medulla.
TS17: future spinal cord	Strong	Regionally restricted	2E , 2D	Expression is in the rostral spinal cord.
TS17: spinal ganglion	Strong		2D , 2E

Structure	Level	Pattern	Image	Note
TS20: spinal cord mantle layer	Strong	Regionally restricted	2G , 2F	Expression is in the rostral spinal cord, absent in the caudal region.
TS20: spinal ganglion	Moderate		2F , 2G	Low to moderate expression.
TS20: brain mantle layer	Present	Regionally restricted	2F , 2G	Expression extends in the medulla oblongata laterally, including medial regions of the alar plate and is maximal at the midline.
TS20: medulla oblongata mantle layer	Present	Regionally restricted	2F , 2G	Expression extends in the medulla oblongata laterally, including medial regions of the alar plate and is maximal at the midline.
TS20: cranial ganglion	Present		2F , 2G
TS20: hypothalamus mantle layer	Present		2F , 2G
TS20: thalamus mantle layer	Present		2F , 2G
TS20: telencephalon	Absent		2G , 2F
TS20: cerebellum primordium	Absent		2F , 2G	The authors state that the mantle layer in the cerebellar lips is inappreciable and expression is absent.

Structure	Level	Pattern	Image	Note
TS20: spinal cord mantle layer	Strong	Regionally restricted	2H , 2I	Expression is in the rostral spinal cord, absent in the caudal area.
TS20: spinal ganglion	Present	Regionally restricted	2I , 2H	Expression is in rostral spinal ganglia.
TS20: embryo mesenchyme	Strong	Regionally restricted	2H , 2I	At the level of the caudal spinal cord high levels of expression are found, but it is absent in chondroid masses.
TS20: nephric duct	Strong	Regionally restricted	2I , 2H	Expression is in the mesenchyme associated with he nephric duct.
TS20: gut mesentery	Strong	Regionally restricted	2H , 2I	Expression is in the falciform process.
TS20: body wall	Strong	Regionally restricted	2H , 2I	Expression is in pre-muscle bands.
TS20: limb	Strong	Regionally restricted	2H , 2I	Expression is in pre-muscle bands.
TS20: endocardial cushion	Strong		2I , 2H
TS20: cardiac muscle tissue	Weak		2H , 2I	Expression is weak or inappreciable.
TS20: choroid plexus	Absent		2I , 2H	Expression is absent in epiplexus cells (Kolmer cells).

Structure	Level	Pattern	Image	Note
TS19: brain mantle layer	Present
TS19: cranial ganglion	Present
TS19: embryo mesenchyme	Present
TS19: spinal ganglion	Present

Structure	Level	Pattern	Image	Note
TS20: blood	Absent			Expression is absent in leukocytes.
TS20: eye	Weak
TS20: gut epithelium	Weak
TS20: nasal cavity epithelium	Weak
TS20: remnant of Rathke's pouch	Weak
TS20: inner ear	Weak	Regionally restricted		Expression is in the otocyst walls.
TS20: metanephros	Weak	Regionally restricted		Expression is in the epithelia.
TS20: blood vessel	Weak	Regionally restricted		Expression is in the walls.