Probe:	pXGR14
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS20: palatal shelf	Present		2A
TS20: face mesenchyme	Present	Regionally restricted	2A	Expression was present throughout the craniofacial mesenchyme. Concentrated expression was noted in the region of palatal shelf outgrowth and in lateral face mesenchyme.
TS20: head mesenchyme	Present	Regionally restricted	2A	Expression was present throughout the craniofacial mesenchyme. Concentrated expression was noted in the region of palatal shelf outgrowth and in lateral face mesenchyme.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	2B	Expression was particularly concentrated in epithelial cells of the region of palatal outgrowth. In some sections the mRNA was more abundant in oral epithelium than elsewhere in the palate.
TS21: palatal shelf mesenchyme	Present	Regionally restricted	2B	In some sections the mRNA was more abundant in sub-oral mesenchyme than elsewhere in the palate.

Structure	Level	Pattern	Image	Note
TS22: palatal shelf epithelium	Present		2C
TS22: palatal shelf mesenchyme	Weak	Non-Uniform	2C	The core of the palatal mesenchyme expressed less mRNA than was observed in lateral maxillary mesenchyme.

Structure	Level	Pattern	Image	Note
TS22: tooth	Strong
TS22: vibrissa follicle	Strong

Structure	Level	Pattern	Image	Note
TS23: nasal epithelium	Present		2D
TS23: oral region epithelium	Present		2D
TS23: palatal shelf mesenchyme	Trace		2D	Expression was very low in palatal mesenchyme, except in regions of bone formation where a slight increase could be detected.