Probe:	Arnt cDNA12
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS17: forebrain	Present	Regionally restricted	1B	Highest expression levels in neuroepithelial cells.
TS17: hindbrain	Present	Regionally restricted	1B	Highest expression levels in neuroepithelial cells.
TS17: midbrain	Present	Regionally restricted	1B	Highest expression levels in neuroepithelial cells.
TS17: neural tube	Present	Regionally restricted	1B	Highest expression levels in neuroepithelial cells.
TS17: branchial arch	Present		1B	Expressed in tissues derived from neuroepithelium and neural crest cells.
TS17: cranial ganglion	Present		1B	Expressed in tissues derived from neuroepithelium and neural crest cells.
TS17: lens placode	Present		1B	Expressed in tissues derived from neuroepithelium and neural crest cells.
TS17: otocyst	Present		1B	Expressed in tissues derived from neuroepithelium and neural crest cells.

Structure	Level	Pattern	Image	Note
TS21: liver	Strong		2B	Highest expression.
TS21: heart	Weak		2B
TS21: mandible	Weak		2B

Structure	Level	Pattern	Image	Note
TS22: liver	Strong		3A	Increased numbers of strongly positive nuclei compared with E13.5. Highest expression.

Structure	Level	Pattern	Image	Note
TS22: integumental system superficial muscle	Present	Regionally restricted	3D	Expressed in muscles underlying the epidermis.
TS22: epidermis	Present		3D	Cytoplasmic and pronounced nuclear expression through most of the epidermal cells.

Structure	Level	Pattern	Image	Note
TS22: lung epithelium	Present		3E

Structure	Level	Pattern	Image	Note
TS22: choroid plexus	Strong	Regionally restricted	3F	Expressed in the choroid plexus of the roof of the 4th ventricles.

Structure	Level	Pattern	Image	Note
TS23: liver	Present		4B	Higher expression than other tissues.

Structure	Level	Pattern	Image	Note
TS24: liver	Present		4F
TS24: pectoral girdle and thoracic body wall muscle	Present	Regionally restricted	4F	Expressed in thoracic muscle.

Structure	Level	Pattern	Image	Note
TS24: adrenal gland	Present	Widespread	5H	Expressed throughout the gland with possibly higher levels in the outer cortical region.

Structure	Level	Pattern	Image	Note
TS22: forebrain	Weak	Regionally restricted		Expressed in the roof.
TS22: midbrain roof plate	Weak
TS22: adrenal cortex	Present	Uniform

Structure	Level	Pattern	Image	Note
TS23: adrenal gland	Present	Uniform
TS23: brain	Present			Similar to that of E14.5.
TS23: epidermis	Present			Similar to that of E14.5.
TS23: integumental system superficial muscle	Present			Similar to that of E14.5.
TS23: lung	Present			Similar to that of E14.5.