Probe:	Shh probe108
Probe preparation:	Antisense labelled with dinitrophenyl RNA

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	1G	Expression only on oral side.

Structure	Level	Pattern	Image	Note
TS20: palatal shelf	Present		2G

Structure	Level	Pattern	Image	Note
TS20: palatal shelf	Present		2H

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	2I	Expression in palatal epithelium restricted to oral side of palatal epithelium.
TS21: palatal rugae	Present		2I	Expression limited to defined stripes that correspond to developing rugae

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	2J	Authors describe expansion of expression into the medial edge epithelium (MEE) and nasal side of the palatal epithelium, with persistence of oral side expression.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present		2K

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	2L	Authors describe expansion on expression into the medial edge epithelium (MEE) and nasal side of the palatal epithelium.

Structure	Level	Pattern	Image	Note
TS22: palatal shelf epithelium	Present		2M

Structure	Level	Pattern	Image	Note
TS22: palatal shelf epithelium	Present		2N

Structure	Level	Pattern	Image	Note
TS22: palatal shelf epithelium	Present	Regionally restricted	2O	Diminished expression in anterior part of oral palatal epithelium. No expression in epithelial cells covering the palatal shelf.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	4A
TS21: palatal rugae	Present		4A	Expression restricted to the epithelial thickening, the developing rugae.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	4B
TS21: palatal rugae	Present		4B	Expression restricted to the epithelial thickening, the developing rugae.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	7A
TS21: palatal rugae	Present		7A	Expression restricted to the epithelial thickening, the developing rugae.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Absent		7B

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	7C	Expanded expression in the palatal shelf epithelium.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	7D	Expansion of expression in palatal epithelium similar to that seen in Msx1-/- mutants.