Probe:	MGC clone 41101
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS21: molar mesenchyme	Present	Regionally restricted	3D	Expression predominantly in buccal molar tooth mesenchyme.
TS21: tooth bud	Present	Regionally restricted	3D	Expression predominantly in buccal molar tooth mesenchyme.
TS21: molar epithelium	Present	Regionally restricted	3D	Some expression in epithelium at tip of bud.

Structure	Level	Pattern	Image	Note
TS21: tongue	Weak	Diffuse	3E
TS21: tongue papillary placode	Present	Regionally restricted	3E	Expression in a small area corresponding to a single circumvallate papilla.

Structure	Level	Pattern	Image	Note
TS21: tongue	Weak	Diffuse	3F

Structure	Level	Pattern	Image	Note
TS23: molar mesenchyme	Absent		3D'	Mesenchymal expression largely undetectable.
TS23: cap stage tooth	Present	Regionally restricted	3D'	Highly restricted expression in epithelium of cervical loop with greater level in buccal aspect.
TS23: cervical loop	Present	Regionally restricted	3D'	Highly restricted expression in epithelium of cervical loop with greater level in buccal aspect.

Structure	Level	Pattern	Image	Note
TS23: tongue mesenchyme	Present	Punctate	3E'	Punctate expression in deep tongue mesenchyme.
TS23: cervical loop	Present	Regionally restricted	3E'	Expression in incisor cervical loop.
TS23: incisor	Present	Regionally restricted	3E'	Expression in incisor cervical loop.

Structure	Level	Pattern	Image	Note
TS23: tongue epithelium	Present	Regionally restricted	3F'	Localized expression on dorsal and lateral epithelium surfaces.