Antibody:	anti-Olfr603
Detection system:	Secondary antibody coupled to Alexa Fluor 488

Structure	Level	Pattern	Image	Note
TS11: embryo	Absent

Structure	Level	Pattern	Image	Note
TS13: allantois	Very strong		2A
TS13: extraembryonic component	Very strong	Regionally restricted	2A	Expression is in the extraembryonic membranes.
TS13: embryo mesenchyme	Strong	Regionally restricted	2A	Expression is in some mesodermal cells underlying the neural plate.
TS13: dorsal aorta	Strong		2A
TS13: future spinal cord neural fold	Moderate		2A
TS13: embryo	Present	Widespread	2A

Structure	Level	Pattern	Image	Note
TS13: allantois	Very strong		2B
TS13: extraembryonic component	Very strong	Regionally restricted	2B	Expression is in the extraembryonic membranes.
TS13: embryo mesenchyme	Strong	Regionally restricted	2B	Expression is in some mesodermal cells underlying the neural plate.
TS13: dorsal aorta	Strong		2B
TS13: future spinal cord neural fold	Moderate		2B
TS13: embryo	Present	Widespread	2B

Structure	Level	Pattern	Image	Note
TS15: embryo	Present	Widespread	2C
TS15: future brain	Strong		2C
TS15: heart	Strong		2C
TS15: somite	Strong		2C
TS15: trunk	Strong	Regionally restricted	2C	Expression is in the umbilicus.
TS15: otocyst	Weak		2C

Structure	Level	Pattern	Image	Note
TS17: embryo	Present	Widespread	2D

Structure	Level	Pattern	Image	Note
TS13: head mesenchyme	Present		3A
TS13: embryo ectoderm	Present	Single cells	3A

Structure	Level	Pattern	Image	Note
TS13: trunk mesenchyme	Present	Regionally restricted	3B	Expression is in vascular precursors adjacent to the neural tube.
TS13: embryo ectoderm	Present	Single cells	3B

Structure	Level	Pattern	Image	Note
TS13: lateral plate mesoderm	Present		3C
TS13: paraxial mesenchyme	Present		3C
TS13: embryo ectoderm	Present	Single cells	3C

Structure	Level	Pattern	Image	Note
TS15: somite	Present	Non-Uniform	3D	Expression is stronger in the apical surface of somitic epithelial cells between adjacent somites.
TS15: myotome	Strong		3D

Structure	Level	Pattern	Image	Note
TS15: somite	Present	Non-Uniform	3E	Expression is stronger in the apical surface of somitic epithelial cells between adjacent somites.
TS15: myotome	Strong		3E

Structure	Level	Pattern	Image	Note
TS15: somite	Present	Non-Uniform	3F	Expression is stronger in the apical surface of somitic epithelial cells between adjacent somites.
TS15: myotome	Strong		3F
TS15: dorsal aorta	Present	Regionally restricted	3F	Expression is in endothelial cells.
TS15: mesenchyme derived from lateral plate	Present		3F

Structure	Level	Pattern	Image	Note
TS15: neural tube	Strong	Regionally restricted	3G	Expression is at the basal surface.
TS15: tail neural plate	Strong	Regionally restricted	3G	Expression is at the basal surface.
TS15: dorsal aorta	Present	Regionally restricted	3G	Expression is in endothelial cells.
TS15: mesenchyme derived from lateral plate	Present		3G

Structure	Level	Pattern	Image	Note
TS15: tail neural plate	Present		3H
TS15: mesenchyme derived from lateral plate	Present		3H

Structure	Level	Pattern	Image	Note
TS15: future brain	Present	Widespread	4A
TS15: head mesenchyme derived from neural crest	Strong	Regionally restricted	4A	Expression is in cells distributed along the basal surface of the neuroepithelium which form a stream of mesenchyme passing over the otocyst.

Structure	Level	Pattern	Image	Note
TS17: neural tube	Present		4B	Expression is within the junctions between individual neuroepithelial cells.
TS17: dorsal root ganglion	Present		4B

Structure	Level	Pattern	Image	Note
TS17: tail	Present	Regionally restricted	4D	Expression is over the dorsal neural tube.

Structure	Level	Pattern	Image	Note
TS20: notochord	Strong		4E
TS20: spinal cord	Present		4E	Expression is within the junctions between individual neuroepithelial cells.
TS20: dorsal root ganglion	Present		4E
TS20: vertebral cartilage condensation	Absent		4E

Structure	Level	Pattern	Image	Note
TS20: spinal cord	Present		4F	Expression is within the junctions between individual neuroepithelial cells.
TS20: dorsal root ganglion	Present		4F

Structure	Level	Pattern	Image	Note
TS20: notochord	Strong		4G
TS20: vertebral cartilage condensation	Absent		4G

Structure	Level	Pattern	Image	Note
TS20: dorsal root ganglion	Present		4H

Structure	Level	Pattern	Image	Note
TS17: atrioventricular canal	Strong		5A	Expression is in the endocardial cushion tissue.
TS17: primitive ventricle endocardial lining	Strong		5A

Structure	Level	Pattern	Image	Note
TS15: common atrial chamber endocardial lining	Present		5B
TS15: endocardial cushion	Present		5B
TS15: primitive ventricle endocardial lining	Present		5B
TS15: visceral pericardium	Present		5B

Structure	Level	Pattern	Image	Note
TS17: aortic sac	Strong	Regionally restricted	5C	Expression is in endocardial cells.

Structure	Level	Pattern	Image	Note
TS17: head mesenchyme	Present	Regionally restricted	5E	Expression is in the mesenchyme between the forebrain and ectoderm.
TS17: lens pit	Present	Regionally restricted	5E	Expression is in the epithelial cells of the lens.
TS17: optic cup	Present	Regionally restricted	5E	Expression is in the epithelial cells of the retina.

Structure	Level	Pattern	Image	Note
TS19: optic stalk	Present		5F

Structure	Level	Pattern	Image	Note
TS20: cornea	Present		5H
TS20: lens vesicle	Present		5H
TS20: optic stalk	Present		5H
TS20: retina	Present		5H

Structure	Level	Pattern	Image	Note
TS20: blood vessel endothelium	Present	Regionally restricted	6A top , 6A Olfr603	Expression is in precursors of the inter-somitic vessels and the paired vessels underlying the neural tube as well as a number of other forming vascular structures.

Structure	Level	Pattern	Image	Note
TS20: arch of aorta	Present		6B	Expression is in endothelial cells.
TS20: esophagus	Absent		6B
TS20: trachea	Absent		6B

Structure	Level	Pattern	Image	Note
TS20: dorsal aorta	Present	Regionally restricted	6C	Expression is in endothelial cells.

Structure	Level	Pattern	Image	Note
TS20: endocardial lining	Present		6D

Structure	Level	Pattern	Image	Note
TS20: eye	Present	Regionally restricted	6E	Expression is in the vasculature underlying the retina.
TS20: vascular plexus	Present	Regionally restricted	6E	Expression is in endothelial cells of the vascular plexus underlying the lens.

Structure	Level	Pattern	Image	Note
TS20: blood vessel	Present		6F , 6G

Structure	Level	Pattern	Image	Note
TS24: dorsal root ganglion	Present
TS24: spinal cord	Present
TS24: trunk mesenchyme	Present	Regionally restricted		Expression is in the umbilical mesenchyme.
TS24: intestine	Absent
TS24: metanephros	Absent