Probe:	Hey1 probe1
Probe preparation:	Antisense RNA

Structure	Level	Pattern	Image	Note
TS13: heart	Present		2A	Expression is present in cardiac precursors.
TS13: allantois	Present		2A
TS13: dorsal aorta	Present		2A

Structure	Level	Pattern	Image	Note
TS14: allantois	Present		2B
TS14: 1st branchial groove	Present		2B

Structure	Level	Pattern	Image	Note
TS15: septum transversum	Present		2C
TS15: heart atrium	Present		2C
TS15: otic pit	Present		2C
TS15: 2nd branchial groove	Present		2C
TS15: floor plate	Present		2C
TS15: future forebrain	Present		2C

Structure	Level	Pattern	Image	Note
TS17: telencephalon	Present		2D
TS17: floor plate	Present		2D
TS17: heart atrium	Present		2D
TS17: forelimb bud	Present		2D
TS17: dermomyotome	Present	Regionally restricted	2D	Expression is present at the ventro-lateral edge of the dermomyotome.
TS17: nasal pit	Present	Regionally restricted	2D

Structure	Level	Pattern	Image	Note
TS19: telencephalon	Present		2E
TS19: forelimb bud	Present		2E
TS19: hindlimb bud	Present		2E
TS19: head	Weak	Regionally restricted	2E	There is weak expression in the craniofacial region.
TS19: spinal nerve	Weak		2E
TS19: myotome	Weak		2E	There is weak expression in muscle precursors.

Structure	Level	Pattern	Image	Note
TS20: vibrissa follicle	Present		2F	Expresssion is present in the whisker follicles.
TS20: telencephalon	Present		2F
TS20: cerebellum primordium	Present	Regionally restricted	2F	Expression is present in the upper rhombic lip.
TS20: forelimb	Present		2F
TS20: hindlimb	Present		2F

Structure	Level	Pattern	Image	Note
TS15: heart atrium	Present		3A
TS15: outflow tract	Present		3A
TS15: heart	Present	Regionally restricted	3A	Expression is present in the inflow tract.
TS15: primitive ventricle	Absent		3A
TS15: septum transversum	Present		3A

Structure	Level	Pattern	Image	Note
TS17: common atrial chamber cardiac muscle	Present		3C
TS17: primitive ventricle cardiac muscle	Absent		3C

Structure	Level	Pattern	Image	Note
TS15: somite	Present	Regionally restricted	4A	Expression is present in the posterior half of newly formed somites, with progressive downregulation as somites mature.
TS15: tail unsegmented mesenchyme	Present	Regionally restricted	4A	A broad band of expression is seen that appears to condense before a new somite is formed to the size of one half segment.

Structure	Level	Pattern	Image	Note
TS15: somite	Present	Regionally restricted	4B	Expression is present in the posterior half of newly formed somites, with progressive downregulation as somites mature.
TS15: tail unsegmented mesenchyme	Present	Regionally restricted	4B	A broad band of expression is seen that appears to condense before a new somite is formed to the size of one half segment.

Structure	Level	Pattern	Image	Note
TS23: cerebellum	Present	Regionally restricted	5A	Expression is present in the ventricular layer and external granule cell layer.

Structure	Level	Pattern	Image	Note
TS23: cerebral cortex ventricular layer	Present		5B

Structure	Level	Pattern	Image	Note
TS25: olfactory epithelium	Present	Regionally restricted	5C	Expresson is present on the apical cell layer of non-neuronal supporting cells.

Structure	Level	Pattern	Image	Note
TS25: vomeronasal organ	Present	Regionally restricted	5D	Expression is not present in the differentiated sensory layer.

Structure	Level	Pattern	Image	Note
TS25: cochlear duct epithelium	Present		5E
TS25: vestibulo-cochlear ganglion	Absent		5E

Structure	Level	Pattern	Image	Note
TS25: lens fiber	Present		5F
TS25: neural retina	Present		5F