Probe:

M-Sema IV probe

Structure	Level	Pattern	Image	Note
TS19: future spinal cord	Present	Regionally restricted		Expression in ventral and dorsolateral parts of spinal cord.
TS19: dorsal root ganglion	Weak
TS19: integumental system	Present	Regionally restricted		Expresssion in skin at all stages examined.

Structure	Level	Pattern	Image	Note
TS22: spinal cord thoracic region	Present	Regionally restricted	3A	Strongest expression in dorsal part of thoracic spinal cord.
TS22: dorsal root ganglion	Present		3A
TS22: trunk mesenchyme	Present	Regionally restricted	3A	Expression in cells surrounding notochord.
TS22: vertebral cartilage condensation	Absent		3A	No expression in cartilage primordia of vertebra.

Structure	Level	Pattern	Image	Note
TS22: corpora quadrigemina	Present		3B	Expression in lamina quadrigemina of mesencephalon.
TS22: cerebellum	Present		3B	Expression in cerebellar primordium.
TS22: 4th ventricle choroid plexus	Present		3B

Structure	Level	Pattern	Image	Note
TS22: neural retina	Present		3C	Expression in some cells localized in the neural retina.

Structure	Level	Pattern	Image	Note
TS22: cortical plate	Present		3D

Structure	Level	Pattern	Image	Note
TS22: hypothalamus	Present			Expression in parts of hypothalamus.
TS22: thalamus	Weak	Regionally restricted		Weak expression at interthalamic adhesion (massa intermedia).
TS22: medulla oblongata	Weak	Regionally restricted		Weak expression in lateral parts of medulla oblongata.
TS22: skin	Present			Expresssion in skin at all stages examined.
TS22: lung	Present
TS22: submandibular gland primordium	Present
TS22: mediastinum	Weak	Regionally restricted		Weak expression in cells surrounding thoracic aorta and exophagus.

Structure	Level	Pattern	Image	Note
TS24: skin	Present		3E	Expresssion in skin at all stages examined.

Structure	Level	Pattern	Image	Note
TS24: spinal cord	Strong	Regionally restricted		Strong expression in dorsal part of spinal cord.
TS24: dorsal root ganglion	Strong
TS24: lung	Present
TS24: submandibular gland	Present
TS24: mediastinum	Weak	Regionally restricted		Weak expression in cells surrounding thoracic aorta and exophagus.

Structure	Level	Pattern	Image	Note
TS25: metanephros	Present		3F
TS25: intestine	Present	Regionally restricted	3F	Expression in inner layers of intestine.

Structure	Level	Pattern	Image	Note
TS25: skin	Present			Expresssion in skin at all stages examined.
TS25: lung	Present
TS25: submandibular gland	Present
TS25: mediastinum	Weak	Regionally restricted		Weak expression in cells surrounding thoracic aorta and exophagus.