Probe:	Spry2 probe4
Probe preparation:	Antisense RNA

Structure	Level	Pattern	Image	Note
TS15: 1st branchial arch mandibular component	Present		2A
TS15: 1st branchial arch maxillary component	Present		2A
TS15: olfactory placode	Present		2A
TS15: telencephalon	Present		2A

Structure	Level	Pattern	Image	Note
TS19: fronto-nasal process	Present	Regionally restricted	2B	Expression was detected in the area of fusion between the frontonasal process and the anterior maxillary process of the first branchial arch.
TS19: maxillary process	Present	Regionally restricted	2B	Expression was detected in the area of fusion between the frontonasal process and the anterior maxillary process of the first branchial arch.

Structure	Level	Pattern	Image	Note
TS20: maxillary process epithelium	Strong	Regionally restricted	2C	Expression was strong in the anterior half of the oral cavity that is derived from the mid-maxilla of the first branchial arch.
TS20: maxillary process mesenchyme	Strong	Regionally restricted	2C	Expression was strong in the anterior half of the oral cavity that is derived from the mid-maxilla of the first branchial arch.

Structure	Level	Pattern	Image	Note
TS22: palatal shelf epithelium	Present	Regionally restricted	2D	Prior to contact of the shelves, expression was in a broad domain of the mid-posterior palatal epithelium. Expression was detected along the medial aspect of the approaching shelves with strongest expression in the posterior half of the palate.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	2G	Expression was detected throughout the palatal epithelium with strongest levels on the oral side of the mid-palate.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf mesenchyme	Strong	Regionally restricted	2O	Expression was strong and broadly expressed along the mediolateral axis in the anterior mesenchyme of the palatal shelf.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf epithelium	Present	Regionally restricted	2P	Expression was detected throughout the palatal epithelium with strongest levels on the oral side of the mid-palate.
TS21: palatal shelf mesenchyme	Present	Regionally restricted	2P	Expression in the mid-palate was tightly restricted to the mesenchyme subjacent to the nasal epithelium.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf mesenchyme	Present	Regionally restricted	2Q	Expression was at slightly lower levels in the posterior mesenchyme.

Structure	Level	Pattern	Image	Note
TS17: embryo	Absent		3C

Structure	Level	Pattern	Image	Note
TS21: palatal shelf	Absent		3F