Probe:	BETA3 probe
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS19: telencephalon	Present	Regionally restricted	2A	Expression is in the preplate.
TS19: telencephalon ventricular layer	Absent		2A

Structure	Level	Pattern	Image	Note
TS21: cortical plate	Very strong		2B
TS21: cerebral cortex ventricular layer	Absent		2B
TS21: ganglionic eminence	Absent		2B

Structure	Level	Pattern	Image	Note
TS21: cortical plate	Very strong		2C , 2D
TS21: thalamus	Present	Regionally restricted	2C	Expression is in the thalamic eminences in the ventral thalamus.
TS21: cerebral cortex ventricular layer	Absent		2D , 2C
TS21: ganglionic eminence	Absent		2D , 2C

Structure	Level	Pattern	Image	Note
TS21: thalamus	Present	Regionally restricted	2F , 2E	Expression is in a ribbon of cells lateral to the ventricular zone of the third ventricle.

Structure	Level	Pattern	Image	Note
TS23: cortical plate	Strong		2G
TS23: cerebral cortex intermediate zone	Present		2G
TS23: cerebral cortex subventricular zone	Present		2G

Structure	Level	Pattern	Image	Note
TS23: hippocampus	Present		2H
TS23: ganglionic eminence	Absent		2H
TS23: midbrain	Absent		2H

Structure	Level	Pattern	Image	Note
TS25: cerebral cortex subventricular zone	Present		2I	Expression breaks abruptly at the junction of the neo- and piriform cortices.
TS25: cortical plate	Present		2I	Expression breaks abruptly at the junction of the neo- and piriform cortices.
TS25: hippocampus	Present		2I	Expression breaks abruptly at the junction of the neo- and piriform cortices.

Structure	Level	Pattern	Image	Note
TS27: cingulate cortex	Strong	Regionally restricted	3A	Expression is in the superficial layers.
TS27: neocortex layer	Strong	Regionally restricted	3A	Expression is in the superficial layers.

Structure	Level	Pattern	Image	Note
TS27: cingulate cortex	Strong	Regionally restricted	3B	Expression is in the superficial layers.
TS27: neocortex layer	Strong	Regionally restricted	3B	Expression is in the superficial layers.
TS27: dentate gyrus	Very strong		3B
TS27: hippocampus CA1	Very strong		3B
TS27: hippocampus CA2	Very strong		3B
TS27: hippocampus CA3	Very strong		3B
TS27: hippocampus CA4	Very strong		3B

Structure	Level	Pattern	Image	Note
TS27: piriform cortex	Weak	Regionally restricted	3C	Expression is in the upper layer.

Structure	Level	Pattern	Image	Note
TS27: cerebellum Purkinje cell layer	Present		3E , 3D
TS27: cerebellum internal granule cell layer	Present		3E , 3D

Structure	Level	Pattern	Image	Note
TS27: hippocampus	Very strong		3F
TS27: neocortex layer	Present	Regionally restricted	3F	Expression is in the upper layers.

Structure	Level	Pattern	Image	Note
TS28: hippocampus	Very strong		3G
TS28: neocortex layer	Weak	Regionally restricted	3G	Expression is in the upper layers.

Structure	Level	Pattern	Image	Note
TS28: dentate gyrus	Present		3H
TS28: hippocampus CA3	Present		3H
TS28: hippocampus CA1	Absent		3H
TS28: neocortex layer	Absent		3H

Structure	Level	Pattern	Image	Note
TS23: spinal cord	Absent