Antibody:	anti-FGFR4
Detection system:	horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS20: lateral ventricle choroid plexus epithelium	Strong	Regionally restricted	2G	Expession distributed throughout cytoplasm, with strong expression on both apical and basal sides of nuclei.
TS20: lateral ventricle choroid plexus stroma	Present		2G
TS20: lateral ventricle ependyma	Present	Regionally restricted	2G	Most expression in region of ventricular surfaces.
TS20: telencephalon	Weak	Regionally restricted	2G	Less expression in surrounding neuronal cells than in choroid plexus and ependyma.

Structure	Level	Pattern	Image	Note
TS20: 4th ventricle choroid plexus epithelium	Strong	Regionally restricted	2H	Expression throughout cytoplasm, with intense expression on apical surfaces of some epithelia.
TS20: 4th ventricle choroid plexus stroma	Present		2H
TS20: 4th ventricle ependyma	Strong	Regionally restricted	2H	Strong expression in ependymal cells on their apical surfaces.

Structure	Level	Pattern	Image	Note
TS23: lateral ventricle choroid plexus epithelium	Absent		2I	Apical expression was found to be nonspecific.

Structure	Level	Pattern	Image	Note
TS20: choroid plexus epithelium	Strong	Regionally restricted
TS20: choroid plexus stroma	Present
TS20: ventricle ependyma	Present
TS20: brain	Present	Regionally restricted		Expression in periventricular central nervous system tissue.

Structure	Level	Pattern	Image	Note
TS23: choroid plexus epithelium	Absent
TS23: choroid plexus stroma	Absent
TS23: ventricle ependyma	Absent
TS23: brain	Absent			No expression in periventricular central nervous system tissue.

Structure	Level	Pattern	Image	Note
TS26: choroid plexus epithelium	Absent
TS26: choroid plexus stroma	Absent
TS26: ventricle ependyma	Absent
TS26: brain	Absent			No expression in periventricular central nervous system tissue.