Antibody:	anti-Hoxa2
Detection system:	Biotinylated secondary antibody/[Strept]avidin coupled to Alexa Fluor 488

Structure	Level	Pattern	Image	Note
TS20: primary palate epithelium	Present		2A
TS20: primary palate mesenchyme	Present		2A

Structure	Level	Pattern	Image	Note
TS20: primary palate epithelium	Present		2B
TS20: primary palate mesenchyme	Present		2B

Structure	Level	Pattern	Image	Note
TS20: primary palate epithelium	Present		2C
TS20: primary palate mesenchyme	Present		2C

Structure	Level	Pattern	Image	Note
TS20: primary palate epithelium	Absent		2D
TS20: primary palate mesenchyme	Absent		2D

Structure	Level	Pattern	Image	Note
TS21: primary palate epithelium	Present		2E	Expressed at increased levels.
TS21: primary palate mesenchyme	Present		2E	Expressed at increased levels.

Structure	Level	Pattern	Image	Note
TS21: primary palate epithelium	Present		2F	Expressed at increased levels.
TS21: primary palate mesenchyme	Present		2F	Expressed at increased levels.

Structure	Level	Pattern	Image	Note
TS21: primary palate epithelium	Present		2G	Expressed at increased levels.
TS21: primary palate mesenchyme	Present		2G	Expressed at increased levels.

Structure	Level	Pattern	Image	Note
TS21: primary palate epithelium	Absent		2H
TS21: primary palate mesenchyme	Absent		2H

Structure	Level	Pattern	Image	Note
TS22: primary palate epithelium	Present	Regionally restricted	2I	Expression appeared to generally decline throughout the palate, with the highest expression observed in the midline epithelial seam.
TS22: primary palate mesenchyme	Present		2I	Expression appeared to generally decline throughout the palate

Structure	Level	Pattern	Image	Note
TS22: primary palate epithelium	Present	Regionally restricted	2J	Expression appeared to generally decline throughout the palate, with the highest expression observed in the midline epithelial seam.
TS22: primary palate mesenchyme	Present		2J	Expression appeared to generally decline throughout the palate.

Structure	Level	Pattern	Image	Note
TS22: primary palate epithelium	Present	Regionally restricted	2K	Expression appeared to generally decline throughout the palate, with the highest expression observed in the midline epithelial seam.
TS22: primary palate mesenchyme	Present		2K	Expression appeared to generally decline throughout the palate

Structure	Level	Pattern	Image	Note
TS22: primary palate epithelium	Absent		2L
TS22: primary palate mesenchyme	Absent		2L

Structure	Level	Pattern	Image	Note
TS23: primary palate epithelium	Weak	Widespread	2M
TS23: primary palate mesenchyme	Weak	Widespread	2M

Structure	Level	Pattern	Image	Note
TS23: primary palate epithelium	Weak	Widespread	2N
TS23: primary palate mesenchyme	Weak	Widespread	2N

Structure	Level	Pattern	Image	Note
TS23: primary palate epithelium	Weak	Widespread	2O
TS23: primary palate mesenchyme	Weak	Widespread	2O

Structure	Level	Pattern	Image	Note
TS23: primary palate epithelium	Absent		2P
TS23: primary palate mesenchyme	Absent		2P