Antibody:	PDGF-AA antibody
Detection system:	Secondary antibody coupled to fluorescein

Structure	Level	Pattern	Image	Note
TS20: basement membrane	Weak	Uniform	2A	Expression is in the basement membrane and around the cell membranes of the palatal shelf epithelium and mesenchyme.
TS20: basement membrane of epithelium	Weak	Uniform	2A	Expression is in the basement membrane and around the cell membranes of the palatal shelf epithelium and mesenchyme.
TS20: palatal shelf epithelium	Weak	Uniform	2A	Expression is in the basement membrane and around the cell membranes of the palatal shelf epithelium and mesenchyme.
TS20: palatal shelf mesenchyme	Weak	Uniform	2A	Expression is in the basement membrane and around the cell membranes of the palatal shelf epithelium and mesenchyme.

Structure	Level	Pattern	Image	Note
TS21: tongue muscle	Very strong	Regionally restricted	2B	Expression is in myotubes.
TS21: palatal shelf epithelium	Present	Punctate	2B
TS21: blood vessel	Present	Regionally restricted	2B	Expression is in the palate.
TS21: nerve	Present	Regionally restricted	2B	Expression is in the palate.
TS21: palatal shelf mesenchyme	Absent		2B

Structure	Level	Pattern	Image	Note
TS22: palatal shelf epithelium	Very strong	Regionally restricted	2C	Expression is in the nasal and medial edge epithelia.
TS22: tongue muscle	Very strong	Regionally restricted	2C	Expression is in myotubes.
TS22: blood vessel endothelium	Present		2C	Expression is in the palate.
TS22: nerve	Present		2C	Expression is in the palate.
TS22: oral epithelium	Weak		2C
TS22: palatal shelf mesenchyme	Weak	Punctate	2C

Structure	Level	Pattern	Image	Note
TS23: palatal shelf epithelium	Very strong	Regionally restricted	2D	Expression is in the nasal and medial edge epithelia and the epithelial triangles.
TS23: tongue muscle	Very strong	Regionally restricted	2D	Expression is in myotubes.
TS23: blood vessel	Present		2D	Expression is in the palate.
TS23: nerve	Present		2D	Expression is in the palate.
TS23: nasal epithelium	Weak		2D
TS23: oral epithelium	Weak		2D
TS23: palatal shelf mesenchyme	Weak		2D

Structure	Level	Pattern	Image	Note
TS23: oral epithelium	Very strong	Regionally restricted	2E	Expression is in the midline area.
TS23: palatal shelf epithelium	Very strong	Regionally restricted	2E	Expression is in the midline area.
TS23: nasal epithelium	Very strong	Regionally restricted	2E	Expression is in the surface layer.
TS23: tongue muscle	Very strong	Regionally restricted	2E	Expression is in myotubes.

Structure	Level	Pattern	Image	Note
TS20: optic nerve	Present		6A
TS20: retina	Present		6A
TS20: eye	Present	Regionally restricted	6A	Expression is in the internal ocular muscle.

Structure	Level	Pattern	Image	Note
TS21: tongue muscle	Very strong		8A
TS21: cranial musculature	Very strong	Regionally restricted	8A	Expression is in facial muscles.
TS21: enamel epithelium	Weak	Punctate	8A
TS21: tooth mesenchyme	Weak	Punctate	8A

Structure	Level	Pattern	Image	Note
TS23: oral epithelium	Present	Punctate	9A	Expression is in the buccal oral epithelium.
TS23: dental papilla	Trace		9A
TS23: enamel epithelium	Weak		9A
TS23: stellate reticulum	Weak		9A