Probe:	Erbal3 cDNA2
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS21: neocortex	Strong		2M
TS21: lateral ganglionic eminence ventricular zone	Strong	Regionally restricted	2M	Expressed at high levels in the ventricular zone.
TS21: medial ganglionic eminence	Strong	Graded	2M	Expressed in a dorsoventral gradient: strong in pMGE1-2, not detected in pMGE5. Also no expression in the septum.

Structure	Level	Pattern	Image	Note
TS21: lateral ganglionic eminence	Present		3H
TS21: neocortex	Present		3H
TS21: preoptic area	Present		3H
TS21: thalamus	Present		3H
TS21: medial ganglionic eminence	Present	Regionally restricted	3H	Absent from the ventricular zone of the ventral MGE (pMGE5).
TS21: diencephalon	Present	Regionally restricted	3H	Expressed in the eminentia thalami.

Structure	Level	Pattern	Image	Note
TS21: lateral ganglionic eminence	Present		4M
TS21: medial ganglionic eminence	Present		4M
TS21: prethalamus	Present		4M
TS21: thalamus	Present		4M
TS21: diencephalon	Present	Regionally restricted	4M	Expressed in the eminentia thalami.

Structure	Level	Pattern	Image	Note
TS19: telencephalon	Present	Regionally restricted	S1E	Expressed in the ventricular zone of the lateral and medial ganglionic eminences (pLGE1-4, pMGE1-4). No expression in pMGE5.