Probe:	Cyp26a1 cDNA
Probe preparation:	Antisense RNA

Structure	Level	Pattern	Image	Note
TS10: embryo	Present	Regionally restricted	3A	Expressed in the anterior headfold tissues.
TS10: extraembryonic endoderm	Present		3A

Structure	Level	Pattern	Image	Note
TS13: trunk mesenchyme	Present	Regionally restricted	3C	Expressed in the posterior-most mesoderm.
TS13: future spinal cord neural plate	Present	Regionally restricted	3C	Expressed in the posterior-most neuroepithelium.

Structure	Level	Pattern	Image	Note
TS14: tail bud	Strong	Regionally restricted	3E	Expressed in the posterior-most mesoderm and neuroepithelium.
TS14: outflow tract endocardial tube	Weak		3E
TS14: rhombomere 2	Weak		3E
TS14: 1st branchial arch	Weak		3E	Expressed in the rostral portion of the mandibular arch.
TS14: blood vessel	Absent		3E

Structure	Level	Pattern	Image	Note
TS12: heart	Present		4A	Expressed along the cardiac crescent.
TS12: blood vessel	Present		4A	Expressed in the developing embryonic vascular networks.

Structure	Level	Pattern	Image	Note
TS12: allantois	Present	Regionally restricted	4B	Expressed in the developing allantoic vascular networks.

Structure	Level	Pattern	Image	Note
TS13: common atrial chamber endocardial tube	Present		4C
TS13: outflow tract endocardial tube	Present		4C
TS13: blood vessel	Present		4C	Expressed in the lateral vascular networks.
TS13: embryo mesenchyme	Strong	Regionally restricted	4C	Expressed in the most-posterior mesoderm.
TS13: sinus venosus	Present	Regionally restricted	4C	Expressed in the endocardium.

Structure	Level	Pattern	Image	Note
TS16: tail mesenchyme	Present		5A	Expressed in tailbud mesoderm.
TS16: tail neural plate	Present		5A	Expressed in tailbud neuroepithelium.
TS16: trunk mesenchyme	Present	Regionally restricted	5A	Expressed in cervical mesenchyme.
TS16: blood vessel	Absent		5A
TS16: forelimb bud	Absent		5A
TS16: hindlimb bud	Absent		5A
TS16: endocardial lining	Present		5A

Structure	Level	Pattern	Image	Note
TS16: future hindbrain	Absent		5C
TS16: embryo mesenchyme	Present	Regionally restricted	5C	Expressed in cervical mesenchyme, laterally and caudally to the otic vesicle.

Structure	Level	Pattern	Image	Note
TS16: embryo mesenchyme	Present	Regionally restricted	5E	Expressed in cervical mesenchyme.
TS16: 1st branchial arch mesenchyme	Present	Regionally restricted	5E	Expressed in the caudal region of the 1st arch.
TS16: 1st branchial arch maxillary-mandibular groove	Present	Regionally restricted	5E	Expressed along the maxillo-mandibular cleft.
TS16: 2nd branchial arch mesenchyme	Present	Regionally restricted	5E	Expressed in cervical mesenchyme encompasses the second arch.

Structure	Level	Pattern	Image	Note
TS18: tail mesenchyme	Present	Regionally restricted	5G	Expressed in the tailbud mesenchyme.
TS18: trunk mesenchyme	Present	Regionally restricted	5G	Expressed in cervical mesenchyme.
TS18: blood vessel	Absent		5G
TS18: forelimb bud	Absent		5G
TS18: hindlimb bud	Absent		5G
TS18: endocardial lining	Present		5G

Structure	Level	Pattern	Image	Note
TS19: oral region	Present	Regionally restricted	8A	Expressed in the maxillo-mandibular cleft region.

Structure	Level	Pattern	Image	Note
TS19: handplate	Weak	Regionally restricted	8C	Expressed in two stripes flanking the apical ectodermal ridge.
TS19: apical ectodermal ridge	Absent		8C

Structure	Level	Pattern	Image	Note
TS19: handplate	Weak	Regionally restricted	8E	Expressed in two stripes flanking the apical ectodermal ridge.
TS19: apical ectodermal ridge	Absent		8E

Structure	Level	Pattern	Image	Note
TS19: neural retinal epithelium	Present