Probe:	RhoB cDNA1
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS13: 1st branchial arch mesenchyme derived from head mesoderm	Present	Regionally restricted	1a	Expression in the cranial mesoderm.

Structure	Level	Pattern	Image	Note
TS15: 1st branchial arch	Present	Regionally restricted	1b	Expression in streams of cells migrating into the branchial arches.
TS15: 2nd branchial arch	Present	Regionally restricted	1b	Expression in streams of cells migrating into the branchial arches.
TS15: trunk paraxial mesenchyme	Present	Regionally restricted	1b	Expression in a segmental pattern.
TS15: future hindbrain	Present	Regionally restricted	1b	Expression at the midbrain/hindbrain boundary.
TS15: future midbrain	Present	Regionally restricted	1b	Expression at the midbrain/hindbrain boundary.

Structure	Level	Pattern	Image	Note
TS15: 1st branchial arch maxillary component	Present		1c
TS15: glossopharyngeal preganglion	Present		1c
TS15: trigeminal preganglion	Present		1c
TS15: otocyst	Present	Regionally restricted	1c	Expression in dorso-lateral portion.

Structure	Level	Pattern	Image	Note
TS15: future brain	Present	Regionally restricted	1d	Expression surrounding the neural tube.
TS15: 2nd branchial arch mesenchyme	Present	Regionally restricted	1d	Expression surrounding the branchial rach arteries.
TS15: 3rd branchial arch mesenchyme	Present	Regionally restricted	1d	Expression surrounding the branchial rach arteries.
TS15: surface ectoderm	Present	Regionally restricted	1d	Expression in melanocyte precursors.
TS15: 1st branchial arch	Present	Regionally restricted	1d	Expression in ectoderm.

Structure	Level	Pattern	Image	Note
TS15: outflow tract	Present		1e
TS15: branchial arch	Present	Regionally restricted	1e	Expression in branchial arch mesenchyme, and surrounding the arch arteries.

Structure	Level	Pattern	Image	Note
TS15: dorsal root ganglion	Present		1f
TS15: peripheral nervous system	Present	Regionally restricted	1f	Expression in the developing sympathetic chain adjacent to the aorta.
TS15: foregut	Present	Patchy	1f
TS15: neural tube floor plate	Present		1f

Structure	Level	Pattern	Image	Note
TS17: trunk paraxial mesenchyme	Present		2a
TS17: branchial arch	Present	Regionally restricted	2a	Expression in streams of cells.

Structure	Level	Pattern	Image	Note
TS17: neural tube	Present	Regionally restricted	2b	Expressing cells migrating out of the dorsal part of the neural tube.

Structure	Level	Pattern	Image	Note
TS17: trigeminal ganglion	Present		2c

Structure	Level	Pattern	Image	Note
TS17: facial ganglion	Present		2d
TS17: glossopharyngeal ganglion	Present		2d
TS17: 1st branchial pouch	Present	Regionally restricted	2d	Epithelium of pouches.
TS17: 2nd branchial pouch	Present	Regionally restricted	2d	Epithelium of pouches.
TS17: 3rd branchial pouch	Present	Regionally restricted	2d	Epithelium of pouches.
TS17: 4th branchial pouch	Present	Regionally restricted	2d	Epithelium of pouches.

Structure	Level	Pattern	Image	Note
TS17: branchial arch artery	Present		2e
TS17: outflow tract	Present	Regionally restricted	2e	Expression in aortic sac.
TS17: neural tube floor plate	Present	Regionally restricted	2e	Expression in the developing motor columns.

Structure	Level	Pattern	Image	Note
TS17: dorsal root ganglion	Weak		2f

Structure	Level	Pattern	Image	Note
TS19: facial ganglion	Present		3a
TS19: glossopharyngeal ganglion	Present		3a
TS19: trigeminal ganglion	Present		3a

Structure	Level	Pattern	Image	Note
TS19: dorsal root ganglion	Present		3b

Structure	Level	Pattern	Image	Note
TS19: trigeminal ganglion	Present		3c

Structure	Level	Pattern	Image	Note
TS19: cranial nerve	Present	Regionally restricted	3d	Expression in the branching facial nerve.
TS19: branchial arch	Present	Regionally restricted	3d	Expression in branchial clefts.

Structure	Level	Pattern	Image	Note
TS19: dorsal root ganglion	Present		3e

Structure	Level	Pattern	Image	Note
TS19: peripheral nervous system	Present	Regionally restricted	3f	Peripheral nerves projecting into the limb.
TS19: dorsal root ganglion	Present		3f

Structure	Level	Pattern	Image	Note
TS15: atrioventricular canal	Present		4a
TS15: outflow tract	Present	Regionally restricted	4a	Expression in the endocardium of the proximal outflow tract.

Structure	Level	Pattern	Image	Note
TS15: outflow tract	Present		4b	Expression in outflow tract and aortic sac endocardium.

Structure	Level	Pattern	Image	Note
TS17: heart	Present	Regionally restricted	4c	Expression in the cushion tissue of the atrioventricular region.

Structure	Level	Pattern	Image	Note
TS17: outflow tract	Present	Regionally restricted	4d	Expression in the cushion tissue.

Structure	Level	Pattern	Image	Note
TS19: atrioventricular canal	Present		4e
TS19: heart atrium	Present	Regionally restricted	4e	Expression in the mesenchymal cap of primary atrial septum.

Structure	Level	Pattern	Image	Note
TS19: outflow tract	Present		4f

Structure	Level	Pattern	Image	Note
TS20: dorsal root ganglion	Present			Expression in the caudal-most ganglia.