Probe:	laminin B2 probe1
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS20: spinal cord ventricular layer	Strong	Regionally restricted	2C	High levels of expression in the ventral portion of the ependymal zone cells.
TS20: embryo mesenchyme	Present	Regionally restricted	2C	Expression in mesenchyme cells surrounding the central nervous system destined to become the meninges.
TS20: tail myocoele	Trace		2C	Expression was either very low or not detected.

Structure	Level	Pattern	Image	Note
TS20: blood vessel	Weak	Regionally restricted	2G	Expression in differentiating capillaries

Structure	Level	Pattern	Image	Note
TS20: spinal cord ventricular layer	Present	Regionally restricted	3B	Expression in ependymal cells in the ventral region of the spinal cord.
TS20: spinal cord floor plate	Present		3B
TS20: embryo mesenchyme	Present	Regionally restricted	3B	Expression in the primitive meninges.
TS20: spinal cord mantle layer	Absent		3B

Structure	Level	Pattern	Image	Note
TS20: embryo mesenchyme	Strong	Regionally restricted	5C	High levels of expression in mesenchyme cells surrounding ganglia.
TS20: dorsal root ganglion	Weak	Regionally restricted	5C	Low levels of expression in a subset of cells within the ganglia.
TS20: spinal nerve	Strong		5C	High levels of expression in ganglia fibers and associated nerve roots.
TS20: vertebral cartilage condensation	Absent		5C	No expression in neural arches.
TS20: tail myocoele	Trace		5C	Expression was either very low or not detected.

Structure	Level	Pattern	Image	Note
TS20: oral region	Absent		6C
TS20: tongue	Weak	Regionally restricted	6C	Preferentially expressed in isolated groups of cells in the base of the tongue.

Structure	Level	Pattern	Image	Note
TS20: cardiac muscle tissue	Present		7C
TS20: endocardial lining	Present		7C
TS20: heart atrium	Present		7C
TS20: heart ventricle	Present		7C

Structure	Level	Pattern	Image	Note
TS20: stomach epithelium	Strong		8C	Uniform high expression in epithelial cells and surrounding mesenchyme.
TS20: stomach mesenchyme	Strong		8C	Uniform high expression in epithelial cells and surrounding mesenchyme.
TS20: liver	Present	Regionally restricted	8C	Lower levels of expression in groups of cells in the epithelium and througout the mesenchyme.

Structure	Level	Pattern	Image	Note
TS20: metanephros	Present	Uniform	9C	Uniform expression in both epithelial and mesenchymal compartments.
TS20: dorsal aorta	Present		9C	Expression in the aorta, essentially the same as in surrounding mesenchyme.