Probe:	netrin-1 probe1
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS21: lateral ganglionic eminence	Strong	Graded	4A	Strong hybridization is detected in the ventricular zone (VZ) of the lateral Gangionic Eminence (LGE). Expression decreases lateral to medial.
TS21: medial ganglionic eminence	Weak	Single cells	4A	Expression is detected in a few cells of the ventricular zone of the medial ganglionic eminence.
TS21: telencephalon	Strong	Regionally restricted	4A	Strong hybridization is detected in the intermediate subpallial sulcus.

Structure	Level	Pattern	Image	Note
TS21: lateral ganglionic eminence	Strong	Graded	4B	Strong hybridization is detected in the ventricular zone (VZ) of the lateral Gangionic Eminence (LGE). Expression decreases lateral to medial.
TS21: medial ganglionic eminence	Weak	Single cells	4B	Expression is detected in a few cells of the ventricular zone of the medial ganglionic eminence.
TS21: telencephalon	Strong	Regionally restricted	4B	Strong hybridization is detected in the intermediate subpallial sulcus.

Structure	Level	Pattern	Image	Note
TS21: telencephalon ventricular layer	Strong	Regionally restricted	4C	Expression is detected in the lateral segment of the ventricular zone.
TS21: ganglionic eminence	Weak	Single cells	4C	A few cells in the mantle layer of the ganglionic eminence are faintly labeled.

Structure	Level	Pattern	Image	Note
TS21: telencephalon ventricular layer	Strong	Regionally restricted	4D	Expression is detected in the lateral segment of the ventricular zone.
TS21: ganglionic eminence	Weak	Single cells	4D	A few cells in the mantle layer of the ganglionic eminence are faintly labeled.

Structure	Level	Pattern	Image	Note
TS21: telencephalon	Strong	Graded	4E	Expression is detected in the left telencephalic vesicle, strong expression in the intermediate subpallial sulcus. Expression decreases lateral to medial and rostral to caudal.
TS21: lateral ganglionic eminence	Strong		4E
TS21: medial ganglionic eminence	Weak		4E

Structure	Level	Pattern	Image	Note
TS22: telencephalon mantle layer	Present	Graded	4F	Expression decreases lateral to medial and rostral to caudal. Number of cells in the mantle zone expressing Ntn1 increase compared to E13 and ventricular zone is thinner.
TS22: telencephalon ventricular layer	Present	Graded	4F	Expression decreases lateral to medial and rostral to caudal. Number of cells in the mantle zone expressing Ntn1 increase compared to E13 and ventricular zone is thinner.

Structure	Level	Pattern	Image	Note
TS22: telencephalon mantle layer	Present	Graded	4G	Expression decreases lateral to medial and rostral to caudal. Number of cells in the mantle zone expressing Ntn1 increase compared to E13 and ventricular zone is thinner.
TS22: telencephalon ventricular layer	Present	Graded	4G	Expression decreases lateral to medial and rostral to caudal. Number of cells in the mantle zone expressing Ntn1 increase compared to E13 and ventricular zone is thinner.

Structure	Level	Pattern	Image	Note
TS22: telencephalon mantle layer	Present	Graded	4H	Expression decreases lateral to medial and rostral to caudal. Number of cells in the mantle zone expressing Ntn1 increase compared to E13 and ventricular zone is thinner.
TS22: telencephalon ventricular layer	Present	Graded	4H	Expression decreases lateral to medial and rostral to caudal. Number of cells in the mantle zone expressing Ntn1 increase compared to E13 and ventricular zone is thinner.