Probe:	plexin-A1 cDNA1
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS24: cochlear ganglion	Strong		2A
TS24: organ of Corti	Moderate		2A

Structure	Level	Pattern	Image	Note
TS24: vestibular ganglion	Strong		2B
TS24: semicircular canal	Moderate	Regionally restricted	2B	Expressed in the ampullary crests.
TS24: labyrinth epithelium	Moderate		2B
TS24: macula of utricle	Moderate		2B

Structure	Level	Pattern	Image	Note
TS24: cochlear nucleus	Strong	Regionally restricted	3A	Expressed in the dorsal and ventral cochlear nuclei which receive the cochlear nerve.
TS24: brainstem nucleus	Weak	Regionally restricted	3A	Very weak expression in the vestibular nucleus.

Structure	Level	Pattern	Image	Note
TS24: nucleus of trapezoid body	Present		3C
TS24: brainstem nucleus	Present	Regionally restricted	3C	Expressed in a region corresponding to the superior olivary complex, and the ventral and dorsal nuclei of the lateral lemniscus.

Structure	Level	Pattern	Image	Note
TS24: inferior colliculus	Present		3D	Most prominent expression.
TS24: superior colliculus	Weak		3D	Very weak.

Structure	Level	Pattern	Image	Note
TS24: geniculate thalamic group	Present	Regionally restricted	3F	Expressed in the medial geniculate body which receives fibers from the inferior colliculus.

Structure	Level	Pattern	Image	Note
TS24: nasal cavity respiratory epithelium	Present		4A
TS24: olfactory epithelium	Present		4A

Structure	Level	Pattern	Image	Note
TS24: vomeronasal organ non-sensory epithelium	Present		4D
TS24: vomeronasal organ sensory epithelium	Present		4D

Structure	Level	Pattern	Image	Note
TS27: vomeronasal organ epithelium	Present	Regionally restricted	4F	Increased expression compared with E16.5, and limited to the receptor layer.
TS27: vomeronasal organ non-sensory epithelium	Present		4F
TS27: vomeronasal organ sensory epithelium	Present		4F

Structure	Level	Pattern	Image	Note
TS24: accessory olfactory bulb	Strong	Regionally restricted	4H	Expressed strongly in the mitral and granule cell layers.
TS24: accessory olfactory bulb mitral cell layer	Strong		4H
TS24: main olfactory bulb	Moderate	Diffuse	4H

Structure	Level	Pattern	Image	Note
TS27: accessory olfactory bulb	Strong		4I
TS27: main olfactory bulb	Weak		4I	Markedly reduced expression.

Structure	Level	Pattern	Image	Note
TS24: brain nucleus	Strong	Regionally restricted	4L	Expressed in the central nuclei of the accessory olfactory pathway including the posterior cortical amygdaloid nucleus and the medial amygdaloid nucleus, but not in the nuclei of the principal olfactory pathways.

Structure	Level	Pattern	Image	Note
TS27: hippocampus CA1	Strong		6A
TS27: hippocampus CA2	Strong		6A
TS27: hippocampus CA3	Strong		6A
TS27: dentate gyrus	Trace		6A	nearly absent

Structure	Level	Pattern	Image	Note
TS27: lateral septal complex	Present		6D

Structure	Level	Pattern	Image	Note
TS24: neural retina	Present	Regionally restricted	7A	Expressed in the medial periphery where post-mitotic ganglion cells accumulate.

Structure	Level	Pattern	Image	Note
TS28: retina ganglion cell layer	Strong		7D
TS28: retina inner nuclear layer	Strong	Regionally restricted	7D	Expressed in the medial half which contains amacrine cells.

Structure	Level	Pattern	Image	Note
TS24: trigeminal ganglion	Moderate		8A

Structure	Level	Pattern	Image	Note
TS24: dorsal root ganglion	Present	Regionally restricted	8D	Limited to some neurons.

Structure	Level	Pattern	Image	Note
TS24: sympathetic ganglion	Trace		8G	nearly negative

Structure	Level	Pattern	Image	Note
TS28: accessory olfactory bulb	Absent
TS28: anterior olfactory nucleus	Absent
TS28: auditory system	Absent
TS28: entorhinal cortex	Absent
TS28: lateral amygdaloid nucleus	Absent
TS28: lateral septal complex	Absent
TS28: main olfactory bulb	Absent
TS28: medial mammillary nucleus	Absent
TS28: piriform cortex	Absent
TS28: hippocampus CA1	Weak
TS28: hippocampus CA2	Weak
TS28: hippocampus CA3	Weak

Structure	Level	Pattern	Image	Note
TS27: accessory olfactory bulb	Strong
TS27: main olfactory bulb	Weak			Markedly reduced expression.
TS27: cortical amygdaloid nucleus	Strong
TS27: medial amygdaloid nucleus	Strong
TS27: anterior olfactory nucleus	Absent
TS27: entorhinal cortex	Absent
TS27: lateral amygdaloid nucleus	Absent
TS27: piriform cortex	Absent

Structure	Level	Pattern	Image	Note
TS27: cortical amygdaloid nucleus	Present
TS27: medial amygdaloid nucleus	Present
TS27: medial mammillary nucleus	Present
TS27: presubiculum	Present
TS27: subiculum	Present
TS27: anterior olfactory nucleus	Absent
TS27: entorhinal cortex	Absent
TS27: lateral amygdaloid nucleus	Absent
TS27: piriform cortex	Absent

Structure	Level	Pattern	Image	Note
TS24: lateral geniculate nucleus	Moderate