Antibody:	Anti-Ki67 (SolA15; 14-5698-82)
Detection system:	Secondary antibody coupled to Alexa Fluor 488

Structure	Level	Pattern	Image	Note
TS27: cerebellar cortex	Present	Widespread	5B , 5A	Widespread co-expression with Adk in entire developing cerebellar cortex.
TS27: cerebellum external granule cell layer	Strong	Regionally restricted	5A , 5B	Robust expression in outermost external granular layer.

Structure	Level	Pattern	Image	Note
TS27: cerebellum external granule cell layer	Present	Regionally restricted	5D , 5E	Co-expression with Adk. Thick layer of double labeled cells.

Structure	Level	Pattern	Image	Note
TS27: cerebellum external granule cell layer	Present	Regionally restricted	5D inset	Co-expression with Adk. Thick layer of double labeled cells.

Structure	Level	Pattern	Image	Note
TS28: cerebellum external granule cell layer	Strong	Regionally restricted	5G , 5H	Co-expression with Adk. Number of double labeled cells significantly increased compared with P0.

Structure	Level	Pattern	Image	Note
TS28: cerebellum external granule cell layer	Strong	Regionally restricted	5G inset	Co-expression with Adk. Number of double labeled cells significantly increased compared with P0.

Structure	Level	Pattern	Image	Note
TS28: cerebellum external granule cell layer	Weak	Regionally restricted	5K , 5J	Number of double labeled cells significantly reduced compared with P0, P2 and P5.