Probe:	mmsv-1 probe
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS26: spinal cord cervical region	Absent		4A	No specific expression at E18.

Structure	Level	Pattern	Image	Note
TS27: spinal cord cervical region	Present	Regionally restricted	4B	Small number of discrete positive foci evident in ventral columns of spinal cord, extending toward lateral columns. Occasional expressing cell in dorsal columns.
TS27: spinal cord white matter	Present	Regionally restricted	4B	Small number of discrete positive foci evident in ventral columns of spinal cord, extending toward lateral columns. Occasional expressing cell in dorsal columns.

Structure	Level	Pattern	Image	Note
TS28: spinal cord cervical region	Present	Regionally restricted	4C	Expression throughout spinal white matter as mixture of focal clusters superimposed on more diffuse background.
TS28: spinal cord white matter	Present	Regionally restricted	4C	Expression throughout spinal white matter as mixture of focal clusters superimposed on more diffuse background.
TS28: spinal cord gray matter	Trace		4C	Occasional foci of expression in gray matter.

Structure	Level	Pattern	Image	Note
TS28: spinal cord cervical region	Strong	Diffuse	4D
TS28: spinal cord white matter	Strong	Diffuse	4D

Structure	Level	Pattern	Image	Note
TS28: cerebellum white matter	Present	Regionally restricted		Foci of expression in white matter tracts of medulla and cerebellum.
TS28: medulla oblongata	Present	Regionally restricted		Foci of expression in white matter tracts of medulla and cerebellum.
TS28: cerebral hemisphere white matter	Absent

Structure	Level	Pattern	Image	Note
TS28: brain white matter	Strong	Diffuse	5A	Strong, mainly diffuse, expression throughout white matter of medulla, pons and cerebellum, extending into midbrain.
TS28: cerebellum white matter	Strong	Diffuse	5A	Strong, mainly diffuse, expression throughout white matter of medulla, pons and cerebellum, extending into midbrain.
TS28: medulla oblongata	Strong	Diffuse	5A	Strong, mainly diffuse, expression throughout white matter of medulla, pons and cerebellum, extending into midbrain.
TS28: midbrain	Strong	Diffuse	5A	Strong, mainly diffuse, expression throughout white matter of medulla, pons and cerebellum, extending into midbrain.
TS28: pons	Strong	Diffuse	5A	Strong, mainly diffuse, expression throughout white matter of medulla, pons and cerebellum, extending into midbrain.
TS28: corpus callosum	Present		5A	Markedly less intense expression rostral to midbrain, with occasional foci in corpus callosum and optic chiasm.
TS28: optic chiasma	Present		5A	Markedly less intense expression rostral to midbrain, with occasional foci in corpus callosum and optic chiasm.
TS28: main olfactory bulb	Trace		5A	Very infrequent expression in olfactory bulb.

Structure	Level	Pattern	Image	Note
TS28: brain white matter	Strong	Widespread	5B	Strong, predominantly diffuse, expression distributed throughout white matter of brain.