Probe:	Rar-beta-2/4 cDNA2
Probe preparation:	Antisense labelled with S35 RNA

Structure	Level	Pattern	Image	Note
TS13: future brain	Strong	Regionally restricted	1C	Expression is in the closing neural tube, absent in the caudal neural groove.
TS13: neural tube	Strong	Regionally restricted	1C	Expression is in the closing neural tube, absent in the caudal neural groove.
TS13: foregut diverticulum endoderm	Strong		1C
TS13: lateral plate mesoderm	Present		1C
TS13: trunk paraxial mesenchyme	Absent		1C

Structure	Level	Pattern	Image	Note
TS15: fronto-nasal process mesenchyme	Present	Regionally restricted	1F	Surrounding the optic vesicles.
TS15: foregut	Present	Regionally restricted	1F	Expression is in the foregeut endoderm.
TS15: future spinal cord	Present		1F
TS15: branchial arch mesenchyme	Absent		1F

Structure	Level	Pattern	Image	Note
TS17: future spinal cord	Present		2F	Expression is from the posterior neuropore to the caudal hindbrain.
TS17: rhombomere 7	Present		2F	Expression is from the posterior neuropore to the caudal hindbrain.
TS17: rhombomere 8	Present		2F	Expression is from the posterior neuropore to the caudal hindbrain.
TS17: gut	Present	Regionally restricted	2F	Expression is in the gut endoderm.
TS17: trunk	Present	Regionally restricted	2F	Umbilical region.
TS17: pericardio-peritoneal canal	Present		2F
TS17: septum transversum	Present		2F

Structure	Level	Pattern	Image	Note
TS17: fronto-nasal process mesenchyme	Present
TS17: lung epithelium	Present
TS17: lung mesenchyme	Present
TS17: head mesenchyme	Present	Regionally restricted		Expression is in periocular mesenchyme.
TS17: limb mesenchyme	Present	Regionally restricted		Proximo-dorsal expression.

Structure	Level	Pattern	Image	Note
TS19: head mesenchyme	Strong	Regionally restricted	3C	Expression is in the mesenchyme of the olfactory and eye regions.
TS19: oral epithelium	Strong		3C
TS19: future spinal cord	Present	Regionally restricted	3C	Expression is along the dorsoventral axis and in thge meninges.

Structure	Level	Pattern	Image	Note
TS19: hindbrain	Present	Regionally restricted	4C	Expression is throughout the ependymal and ventricular layers of both alar and basal plates and weakly in the ventral horns.

Structure	Level	Pattern	Image	Note
TS19: future spinal cord	Present	Regionally restricted	4F	Expression is along the dorsoventral axis.

Structure	Level	Pattern	Image	Note
TS21: metanephros	Present		5F
TS21: pancreas	Present		5F
TS21: spinal cord meninges	Present		5F
TS21: spinal cord ventricular layer	Present		5F
TS21: basal columns	Present	Regionally restricted	5F	Expression is in the ventral-most cells of the ventral horns.
TS21: esophagus epithelium	Present		5F
TS21: head	Present	Regionally restricted	5F	Expression is in pharyngeal epithelia.
TS21: cardiac muscle tissue	Moderate		5F
TS21: genital tubercle	Present		5F
TS21: rectum	Present		5F
TS21: trunk	Present	Regionally restricted	5F	Expression is in the umbilical region.

Structure	Level	Pattern	Image	Note
TS21: pituitary gland	Present	Regionally restricted	6D	Expression is most abundant in the periphery.

Structure	Level	Pattern	Image	Note
TS21: head mesenchyme	Present	Regionally restricted	6H	Expression is in the mesenchyme of the olfactory region.

Structure	Level	Pattern	Image	Note
TS21: corpus striatum	Present	Regionally restricted	6L

Structure	Level	Pattern	Image	Note
TS21: head mesenchyme	Strong	Regionally restricted	7C	Expression is in the periocular and retrolenticular mesenchyme.

Structure	Level	Pattern	Image	Note
TS21: olfactory epithelium	Strong		7F
TS21: nasal cavity	Strong	Regionally restricted	7F	Expression is in the olfactory mesenchyme.

Structure	Level	Pattern	Image	Note
TS21: esophagus epithelium	Present		7I
TS21: head	Present	Regionally restricted	7I	Expression is in pharyngeal epithelia.
TS21: carina trachea epithelium	Present	Regionally restricted	7I	Expression is absent in the ventral part.
TS21: carina trachea mesenchyme	Strong		7I

Structure	Level	Pattern	Image	Note
TS21: hindlimb interdigital region mesenchyme	Strong		8F

Structure	Level	Pattern	Image	Note
TS21: inner ear	Present
TS21: stomach epithelium	Present
TS21: stomach mesenchyme	Present
TS21: tooth mesenchyme	Present
TS21: gut mesenchyme	Present	Regionally restricted		Expression is in the outermost mesenchyme of the gut.