Probe:	semC probe2
Probe preparation:	labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS17: hindbrain	Present	Regionally restricted	1C	Expression in post-otic hindbrain. Expression restricted to dorsal two-thirds of hindbrain.

Structure	Level	Pattern	Image	Note
TS17: future spinal cord	Absent			No expression in thoracic spinal cord at this stage.

Structure	Level	Pattern	Image	Note
TS19: neural tube ventricular layer	Present	Regionally restricted	1D	In thoracic region, expression first detectable at E11.5 at lateral margin of ventricular zone.
TS19: dorsal root ganglion	Present		1D

Structure	Level	Pattern	Image	Note
TS20: spinal cord marginal layer	Weak		2C
TS20: spinal cord lateral wall	Strong	Regionally restricted	2C	Higher level of expression at dorsal boundary of ventricular and marginal zones.
TS20: dorsal root ganglion	Present		2C

Structure	Level	Pattern	Image	Note
TS23: back musculature	Present	Regionally restricted	4C	Expression in epaxial muscles of back.
TS23: spinal cord thoracic region	Present	Widespread	4C	Expression thoughout spinal cord with the exception of the superficial dorsal horn.
TS23: spinal cord dorsal horn	Absent		4C
TS23: dorsal root ganglion	Present		4C
TS23: sympathetic ganglion	Present		4C

Structure	Level	Pattern	Image	Note
TS20: brain	Present	Widespread		Expression throughout brain in most postmitotic neurons.
TS20: telencephalon	Weak	Regionally restricted		Weak expression in neuroepithelium of telencephalic vesicle.

Structure	Level	Pattern	Image	Note
TS23: brain	Present	Uniform	6C	Authors report expression was distributed more uniformly.
TS23: cerebral cortex	Present		6C	Low levels of expression in immature cortex.