Probe:	Foxc2 probe5
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS13: head mesenchyme	Present		4A
TS13: head somite	Present		4A

Structure	Level	Pattern	Image	Note
TS15: head mesenchyme	Present	Regionally restricted	4B	Expression in mesenchyme under brain.
TS15: eye mesenchyme	Present	Regionally restricted	4B	Expression in mesenchyme at periphery of eye.
TS15: 1st branchial arch	Present	Regionally restricted	4B	Expression in proximal portion of first an second pharyngeal arches, corresponding to middle ear ossicle-forming area.
TS15: 2nd branchial arch	Present	Regionally restricted	4B	Expression in proximal portion of first an second pharyngeal arches, corresponding to middle ear ossicle-forming area.
TS15: forelimb bud mesenchyme	Absent		4B

Structure	Level	Pattern	Image	Note
TS17: head mesenchyme	Present	Regionally restricted	4C	Expression in mesenchyme under brain.
TS17: eye mesenchyme	Present	Regionally restricted	4C	Expression in mesenchyme at periphery of eye.
TS17: 1st branchial arch	Present	Regionally restricted	4C	Expression in proximal portion of first an second pharyngeal arches, corresponding to middle ear ossicle-forming area.
TS17: 2nd branchial arch	Present	Regionally restricted	4C	Expression in proximal portion of first an second pharyngeal arches, corresponding to middle ear ossicle-forming area.
TS17: forelimb bud mesenchyme	Absent		4C

Structure	Level	Pattern	Image	Note
TS17: head mesenchyme	Present	Regionally restricted	4D	Expression in mesenchyme forming cranial base.
TS17: branchial arch mesenchyme	Present		4D
TS17: middle ear mesenchyme	Present		4D
TS17: forelimb bud mesenchyme	Absent		4D

Structure	Level	Pattern	Image	Note
TS17: head	Present		4E	Authors report expression in a similar manner to that of Foxc1.

Structure	Level	Pattern	Image	Note
TS20: cranium	Present	Regionally restricted	5A	Expression in cranial base.
TS20: nose	Present	Regionally restricted	5A	Expression in nasal capsule.
TS20: otic capsule	Present		5A

Structure	Level	Pattern	Image	Note
TS20: cranium	Present	Regionally restricted	5B	Expression in cranial base.
TS20: tongue epithelium	Present		5B
TS20: tongue muscle	Present	Regionally restricted	5B	Expression in genioglossus-forming area.
TS20: Meckel's cartilage	Present		5B

Structure	Level	Pattern	Image	Note
TS20: nose	Present	Regionally restricted	5C	Expression in nasal capsule.
TS20: otic capsule	Present		5C
TS20: middle ear mesenchyme	Present	Regionally restricted	5C	Expression in auditory ossicles.

Structure	Level	Pattern	Image	Note
TS22: chondrocranium	Present	Regionally restricted	5G	Similar pattern of expression in cartilage of chondrocranium as seen at E12.5.
TS22: perichondrium	Strong	Regionally restricted	5G	Vigorous expression in perichondrium.

Structure	Cell Type	Level	Pattern	Image	Note
TS22: chondrocranium	chondrocyte	Present		5H
TS22: tongue epithelium		Present		5H

Structure	Level	Pattern	Image	Note
TS22: chondrocranium	Present	Regionally restricted	5I	Similar pattern of expression in cartilage of chondrocranium as seen at E12.5.

Structure	Level	Pattern	Image	Note
TS20: palatal shelf	Absent		7A
TS20: tongue epithelium	Present		7A
TS20: tongue muscle	Present	Regionally restricted	7A	Expression in genioglossus-forming area.
TS20: Meckel's cartilage	Present		7A
TS20: head mesenchyme	Present	Regionally restricted	7A	Expression in mesenchyme between genioglossus and Meckel;s cartilage.

Structure	Level	Pattern	Image	Note
TS19: tongue	Present		10A