Probe:	neuregulin type II
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS16: notochord	Present		4G

Structure	Level	Pattern	Image	Note
TS20: dorsal root ganglion	Present		4H
TS20: spinal cord	Present		4H
TS20: trunk mesenchyme	Weak	Regionally restricted	4H	Expression in the skeletal muscles.

Structure	Level	Pattern	Image	Note
TS26: dorsal root ganglion	Present		4I
TS26: spinal cord	Present		4I
TS26: vertebral axis musculature	Weak		4I	Expression in the skeletal muscles.

Structure	Level	Pattern	Image	Note
TS26: brain	Weak	Uniform	7C	Expression at low levels in all parts of the brain.
TS26: cerebral cortex ventricular zone	Strong		7C
TS26: telencephalon	Strong	Regionally restricted	7C	Expression in the claustrum.
TS26: retina	Strong		7C

Structure	Level	Pattern	Image	Note
TS20: telencephalon ventricular layer	Strong
TS20: cerebral cortex	Present
TS20: telencephalon	Present	Regionally restricted		Expression in the olfactory lobes.
TS20: diencephalon	Present
TS20: midbrain	Present
TS20: medulla oblongata	Present
TS20: pons	Present
TS20: spinal cord	Present
TS20: nasal cavity epithelium	Absent			Absent in undifferentiated epithelium.
TS20: retina	Absent			Absent in undifferentiated epithelium.
TS20: inner ear epithelium	Absent			Absent in undifferentiated epithelium.
TS20: sympathetic ganglion	Absent
TS20: skeletal muscle	Present
TS20: cardiac muscle tissue	Absent
TS20: atrioventricular endocardial cushion	Absent
TS20: endocardial cushion	Absent
TS20: right atrium valve	Absent
TS20: endocardial lining	Absent

Structure	Level	Pattern	Image	Note
TS23: telencephalon ventricular layer	Strong
TS23: cerebral cortex	Present
TS23: olfactory lobe	Present
TS23: corpus striatum	Present
TS23: diencephalon	Present
TS23: midbrain	Present
TS23: medulla oblongata	Present
TS23: pons	Present
TS23: spinal cord	Strong
TS23: choroid plexus	Absent
TS23: pituitary gland	Strong
TS23: olfactory epithelium	Absent
TS23: nasal cavity respiratory epithelium	Absent
TS23: retina nuclear layer	Absent			Expression was absent from the nuclear and ganglion cell layers.
TS23: inner ear epithelium	Absent			Absent in the sensory and non-sensory epithelium.
TS23: sympathetic ganglion	Absent
TS23: skeletal muscle	Present
TS23: cardiac muscle tissue	Absent
TS23: atrioventricular endocardial cushion	Absent
TS23: bulbar cushion	Absent
TS23: endocardial cushion	Absent
TS23: heart valve	Absent
TS23: endocardial tissue	Absent

Structure	Level	Pattern	Image	Note
TS26: cerebral cortex ventricular zone	Strong
TS26: cerebral cortex	Present
TS26: hippocampus	Absent
TS26: olfactory lobe	Present
TS26: corpus striatum	Strong
TS26: telencephalon	Strong	Regionally restricted		Expression in the claustrum.
TS26: diencephalon	Strong
TS26: midbrain	Strong
TS26: cerebellum	Present	Regionally restricted		Expression was detected in the medulla but was absent from the cortex.
TS26: medulla oblongata	Present
TS26: pons	Present
TS26: spinal cord	Strong
TS26: choroid plexus	Absent
TS26: pituitary gland	Strong
TS26: nasal cavity respiratory epithelium	Absent
TS26: olfactory epithelium	Absent
TS26: retina nuclear layer	Present	Regionally restricted		Expression was detected in the ganglion cell layer but was absent from the other nuclear layers.
TS26: inner ear epithelium	Absent			Absent in sensory and non-sensory epithelium.
TS26: sympathetic ganglion	Absent
TS26: skeletal muscle	Present
TS26: cardiac muscle tissue	Absent
TS26: atrioventricular endocardial cushion	Absent
TS26: endocardial cushion	Absent
TS26: heart valve	Absent
TS26: endocardial tissue	Absent