Probe:	Idb1 cDNA1
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS20: hindbrain ventricular layer	Present		2A	In the central nervous system, expression localized to the mitotic epithelium (ventricular zone) of the hindbrain and midbrain.
TS20: midbrain ventricular layer	Present		2A	In the central nervous system, expression localized to the mitotic epithelium (ventricular zone) of the hindbrain and midbrain.
TS20: forebrain	Absent		2A
TS20: gut mesenchyme	Present	Uniform	2A	Uniform distribution of expression in a number of developing tissues including the mandible, maxilla, somites, lung bud and gut mesenchyme.
TS20: lung	Present	Uniform	2A	Uniform distribution of expression in a number of developing tissues including the mandible, maxilla, somites, lung bud and gut mesenchyme.
TS20: mandible primordium	Present	Uniform	2A	Uniform distribution of expression in a number of developing tissues including the mandible, maxilla, somites, lung bud and gut mesenchyme.
TS20: maxilla	Present	Uniform	2A	Uniform distribution of expression in a number of developing tissues including the mandible, maxilla, somites, lung bud and gut mesenchyme.
TS20: tail somite	Present	Uniform	2A	Uniform distribution of expression in a number of developing tissues including the mandible, maxilla, somites, lung bud and gut mesenchyme.

Structure	Level	Pattern	Image	Note
TS15: future hindbrain	Present	Regionally restricted	3A	Major expression localized to ventricular zone of the spinal cord, rhombencephalon and mesencephalon, with a dorsoventral gradient of expression.
TS15: future midbrain	Present	Regionally restricted	3A	Major expression localized to ventricular zone of the spinal cord, rhombencephalon and mesencephalon, with a dorsoventral gradient of expression.
TS15: future spinal cord	Present	Regionally restricted	3A	Major expression localized to ventricular zone of the spinal cord, rhombencephalon and mesencephalon, with a dorsoventral gradient of expression.
TS15: future forebrain	Absent		3A
TS15: branchial arch	Present		3A
TS15: gut	Present		3A
TS15: somite	Present		3A
TS15: tail	Present		3A

Structure	Level	Pattern	Image	Note
TS17: future spinal cord	Present	Regionally restricted	3C	Expression in the ventricular zone of the spinal cord.
TS17: hindbrain	Present	Regionally restricted	3C	Expression in the myelencephalon localized to dorsal neuroepithelium.
TS17: hindbrain ventricular layer	Present		3C
TS17: midbrain ventricular layer	Present		3C
TS17: forebrain	Absent		3C

Structure	Level	Pattern	Image	Note
TS20: spinal cord	Present	Regionally restricted	3E	Expression in neuroepithelium of spinal cord
TS20: forebrain	Absent		3E
TS20: head mesenchyme	Present		3E
TS20: neural retinal epithelium	Present		3E
TS20: choroid invagination	Present		3E	Authors report expression in the anterior choroid plexus.

Structure	Level	Pattern	Image	Note
TS22: 4th ventricle	Present	Regionally restricted	3G	Expression localised to neuroepithelium lining the fourth ventricle and medial wall of the lateral ventricle,
TS22: lateral ventricle	Present	Regionally restricted	3G	Expression localised to neuroepithelium lining the fourth ventricle and medial wall of the lateral ventricle,
TS22: lateral ventricle choroid plexus	Present		3G	Authors report expression in the posterior and anterior choroid plexus.
TS22: medulla oblongata part of 4th ventricle choroid plexus	Present		3G	Authors report expression in the posterior and anterior choroid plexus.
TS22: metencephalon part of 4th ventricle choroid plexus	Present		3G	Authors report expression in the posterior and anterior choroid plexus.
TS22: telencephalon	Present	Regionally restricted	3G	Expression along the full extent of the medial telencephalic wall.

Structure	Level	Pattern	Image	Note
TS24: hippocampus	Strong		3I	Expression especially intense in the hipocampus.
TS24: brain	Present	Regionally restricted	3I	Decreased expression in the brain except in the hippocampus.
TS24: neural retina	Present		3I

Structure	Level	Pattern	Image	Note
TS20: dorsal root ganglion	Strong		4A

Structure	Level	Pattern	Image	Note
TS20: sympathetic ganglion	Absent

Structure	Level	Pattern	Image	Note
TS22: sympathetic ganglion	Absent		5A

Structure	Level	Pattern	Image	Note
TS22: adrenal medulla	Absent		5C	No expression in adrenal medullary islands.