Antibody:	anti-AP-2b
Detection system:	Secondary antibody coupled to Alexa Fluor 555

Structure	Cell Type	Level	Pattern	Image	Note
TS20: cerebellum primordium	cerebellar inhibitory GABAergic interneuron	Present	Regionally restricted	3K , 3N	Some Tfap2b+ cells expressed Olig2 while others express both Olig2 and Lhx1/5 (both mitotic and early postmitotic GABAergic cells) in the ventricular zone. All Olig2-expressing cells in the ventricular zone expressed Tfap2b.
TS20: cerebellum white matter	cerebellar inhibitory GABAergic interneuron	Present		3N , 3K	Only coexpressed Lhx1/5 (postmitotic GABAergic neurons).

Structure	Cell Type	Level	Pattern	Image	Note
TS23: cerebellum	cerebellar inhibitory GABAergic interneuron	Present		4D , 4E' , 4F'	Expressed in two subpopulations (Tfap2b+/Pax2+ and Tfap2b+-alone).
TS23: cerebellum layer	Purkinje cell	Absent		4E' , 4D , 4F'	Not coexpressed with Rora.

Structure	Cell Type	Level	Pattern	Image	Note
TS26: cerebellum white matter	cerebellar inhibitory GABAergic interneuron	Present		4L' , 4J , 4K'	An increase in Tfap2b+/Pax2+ cells from 54% to 86% and a decrease in cells expressing only Tfap2b from 42% to 14%.
TS26: cerebellum Purkinje cell layer	Purkinje cell	Absent		4J , 4K' , 4L'

Structure	Level	Pattern	Image	Note
TS20: cerebellum white matter	Present		S3G , S3I	Coexpressed with Pax2 in GABAergic interneuron precursors.
TS20: cerebellum primordium	Present	Regionally restricted	S3G , S3I	Expressed in the ventricular zone. Coexpressed with Pax2 in GABAergic interneuron precursors.