Probe:	pFRK16
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS22: brain	Present		6B
TS22: spinal cord	Present		6B
TS22: spinal ganglion	Present		6B
TS22: trigeminal ganglion	Present		6B	There is punctate labeling in the ganglion, suggesting expression is only present in a subset of the neurons.
TS22: dorsal root ganglion	Present		6F , 6B	There is punctate labeling in the ganglion, suggesting expression is only present in a subset of the neurons.
TS22: peripheral nerve trunk	Present		6B
TS22: head mesenchyme	Present	Regionally restricted	6B	Expression is present in facial structures which represent either neural crest-derived mesenchyme or innervation pathways from cranial ganglia.

Structure	Level	Pattern	Image	Note
TS22: brain	Present		6D	Expression is present in the brain but not in other organs in which central or peripheral nervous system structures are absent.
TS22: trigeminal ganglion	Present		6D
TS22: trigeminal nerve mandibular division	Present		6D	The innervation pathways branches are outlined by expression.
TS22: trigeminal nerve maxillary division	Present		6D	The innervation pathways branches are outlined by expression.
TS22: trigeminal nerve ophthalmic division	Present		6D	The innervation pathways branches are outlined by expression.
TS22: optic nerve	Absent		6D
TS22: tooth	Strong		6D

Structure	Level	Pattern	Image	Note
TS26: brain	Strong		7B	The expression exhibits a good correlation with the cell density present in the various morphological structures.
TS26: spinal cord	Strong		7B
TS26: dental papilla	Present	Regionally restricted	7B	Expression is present in upper dental papillae.
TS26: submandibular gland	Present		7B
TS26: head	Present	Regionally restricted	7B	Expression is present in the snout.