Antibody:	anti-SIL1
Detection system:	Biotinylated secondary antibody/[Strept]avidin coupled to horseradish peroxidase
Assay notes:	This data is pictured in the supplementary material.

Structure	Level	Pattern	Image	Note
TS20: lens vesicle epithelium	Present		S5c , S5a
TS20: retina	Present		S5c , S5a

Structure	Level	Pattern	Image	Note
TS23: cerebral cortex	Present		S5e	There is diffuse expression in the developing cerebral cortex.

Structure	Level	Pattern	Image	Note
TS28: neocortex layer	Present		S5g	Expression is present in cortical neurons.

Structure	Level	Pattern	Image	Note
TS28: cerebellum	Present		S5i
TS28: cerebellum Purkinje cell layer	Present		S5i , S5k
TS28: cerebellum white matter	Present		S5i	Expression is present in the glial cells of the white matter.

Structure	Level	Pattern	Image	Note
TS28: cerebellum granule cell layer	Present			Occasional immunopositive granule cells are seen.

Structure	Level	Pattern	Image	Note
TS28: hippocampus CA1	Present		S5m
TS28: hippocampus CA4	Present		S5m
TS28: hippocampus pyramidal cell layer	Present		S5m
TS28: hippocampus CA2	Present		S5m , S5o	Expression is somewhat accentuated in region CA3.
TS28: hippocampus CA3	Present		S5m , S5o	Expression is somewhat accentuated in region CA3.
TS28: dentate gyrus	Present		S5m