Probe:	pab80PH
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS19: mandibular process	Strong	Regionally restricted	4A/B	Expression is in the dorsal portions.
TS19: maxillary process	Strong	Regionally restricted	4A/B	Expression is in the dorsal portions.
TS19: 1st branchial arch	Strong	Regionally restricted	4A/B	Expression is in the mesenchyme surrounding the first branchial pouch.
TS19: fronto-nasal process	Present		4A/B	Expression is in mesenchyme surrounding the forming olfactory epithelium and is absent around the mucosal epithelium of the nasal pits.
TS19: 2nd branchial arch	Weak	Regionally restricted	4A/B	Expression is in the center.
TS19: Meckel's cartilage pre-cartilage condensation	Absent		4A/B

Structure	Level	Pattern	Image	Note
TS19: maxillary process	Strong	Regionally restricted	4C/D	Expression is in the primary palate.
TS19: 1st branchial pouch	Present	Regionally restricted	4C/D	Expression is in the mesenchyme surrounding the first branchial pouch.
TS19: Meckel's cartilage pre-cartilage condensation	Absent		4C/D

Structure	Level	Pattern	Image	Note
TS20: primary palate	Present		4E/F
TS20: head mesenchyme	Present	Regionally restricted	4E/F	Expression is in the mesenchyme surrounding the first branchial pouch.
TS20: fronto-nasal process mesenchyme	Present		4E/F	Expression is in mesenchyme surrounding the forming olfactory epithelium and is absent around the mucosal epithelium of the nasal pits.

Structure	Level	Pattern	Image	Note
TS20: primary palate	Strong		4G/H
TS20: head mesenchyme	Present	Regionally restricted	4G/H	Expression is in the mesenchyme surrounding the first branchial pouch.
TS20: fronto-nasal process mesenchyme	Present	Regionally restricted	4G/H	Expression is in mesenchyme surrounding the forming olfactory epithelium and is absent around the mucosal epithelium of the nasal pits.
TS20: mandibular process	Present	Regionally restricted	4G/H	Expression is dorsal, absent in ventral areas and muscle.

Structure	Level	Pattern	Image	Note
TS20: head mesenchyme	Present	Regionally restricted	5A/B	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS20: central nervous system ganglion	Absent		5A/B	Absent in geniculate ganglion.

Structure	Level	Pattern	Image	Note
TS20: head mesenchyme	Present	Regionally restricted	5C/D	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS20: superior vagus ganglion	Absent		5C/D

Structure	Level	Pattern	Image	Note
TS20: head mesenchyme	Present	Regionally restricted	5E/F	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS20: Meckel's cartilage	Absent		5E/F
TS20: superior vagus ganglion	Absent		5E/F

Structure	Level	Pattern	Image	Note
TS20: head mesenchyme	Present	Regionally restricted	5G/H	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS20: superior vagus ganglion	Absent		5G/H

Structure	Level	Pattern	Image	Note
TS20: mandibular process	Present	Regionally restricted	5I/J	Expression is in the area surrounding the molar tooth germ.
TS20: maxillary process	Present	Regionally restricted	5I/J	Expression is in the area surrounding the molar tooth germ.
TS20: superior vagus ganglion	Absent		5I/J

Structure	Level	Pattern	Image	Note
TS20: mandibular process	Present	Regionally restricted	5K/L	Absent around the incisor tooth germ. Expression is dorsal, absent in ventral areas and muscle.
TS20: maxillary process	Present	Regionally restricted	5K/L

Structure	Level	Pattern	Image	Note
TS21: head mesenchyme	Present	Regionally restricted	6A	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS21: middle ear mesenchyme	Present	Regionally restricted	6A	Expression is in mesenchyme surrounding the future tubo-tympanic recess.
TS21: Meckel's cartilage	Absent		6A
TS21: mandible	Absent		6A

Structure	Level	Pattern	Image	Note
TS21: head mesenchyme	Present	Regionally restricted	6B	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS21: nose	Present	Regionally restricted	6B	Expression is in mesenchyme surrounding the olfactory epithelium.
TS21: lower jaw mesenchyme	Present		6B
TS21: palatal shelf	Present		6B
TS21: upper jaw mesenchyme	Present		6B
TS21: vomeronasal organ	Present		6B
TS21: Meckel's cartilage	Absent		6B

Structure	Level	Pattern	Image	Note
TS21: head mesenchyme	Present	Regionally restricted	6C	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS21: nose	Present	Regionally restricted	6C	Expression is in mesenchyme surrounding the olfactory epithelium.
TS21: tooth mesenchyme	Present	Regionally restricted	6C	Expression is in the condensed mesenchyme of the future dental papilla and follicle, and the mesenchyme of the surrounding area.
TS21: Meckel's cartilage	Absent		6C

Structure	Level	Pattern	Image	Note
TS21: head mesenchyme	Present	Regionally restricted	6D	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS21: lower jaw mesenchyme	Present		6D
TS21: palatal shelf	Present		6D
TS21: upper jaw mesenchyme	Present		6D
TS21: tongue muscle	Weak	Regionally restricted	6D	Some muscles at the base of the tongue were sparsely labeled.
TS21: Meckel's cartilage	Absent		6D

Structure	Level	Pattern	Image	Note
TS21: head mesenchyme	Present	Regionally restricted	6E	Expression is in the mesenchymal derivatives of the first and second branchial arches.
TS21: lower jaw mesenchyme	Present		6E
TS21: palatal shelf	Present		6E
TS21: upper jaw mesenchyme	Present		6E
TS21: submandibular gland primordium mesenchyme	Present		6E
TS21: Meckel's cartilage	Absent		6E

Structure	Level	Pattern	Image	Note
TS19: mandibular process	Present	Regionally restricted	7A/B	Expression is in the loose mesenchyme in the region of the thickened dental epithelium of the first upper molar.
TS19: maxillary process	Present	Regionally restricted	7A/B	Expression is in the loose mesenchyme in the region of the thickened dental epithelium of the first upper molar.
TS19: oral epithelium	Absent		7A/B

Structure	Level	Pattern	Image	Note
TS21: tooth mesenchyme	Present	Regionally restricted	7C/D	Expression is in the condensed mesenchyme of the future dental papilla and follicle, and the mesenchyme of the surrounding area.

Structure	Level	Pattern	Image	Note
TS22: upper jaw molar dental papilla	Strong		7E/F
TS22: upper jaw molar enamel organ	Absent		7E/F

Structure	Level	Pattern	Image	Note
TS24: upper jaw molar dental papilla	Strong		7G/H
TS24: soft palate	Weak		7G/H

Structure	Level	Pattern	Image	Note
TS24: incisor	Absent		7I/J

Structure	Level	Pattern	Image	Note
TS19: ventral mesogastrium	Very strong		8A/B
TS19: stomach	Very strong	Regionally restricted	8A/B	Expression is in the stomach wall.
TS19: peritoneal component	Present	Regionally restricted	8A/B	Expression is in the gastric peritoneum and the hepatic peritoneum facing the stomach.
TS19: pancreas primordium	Absent		8A/B

Structure	Level	Pattern	Image	Note
TS21: stomach mesenchyme	Very strong		8C/D
TS21: peritoneal component	Present	Regionally restricted	8C/D	Expression is in the gastric peritoneum and the hepatic peritoneum facing the stomach.
TS21: stomach epithelium	Absent		8C/D	Absent in gastric epithelium.

Structure	Level	Pattern	Image	Note
TS19: forelimb bud	Present	Regionally restricted		Expression is proximal.
TS19: hindlimb bud	Present	Regionally restricted		Expression is proximal.

Structure	Level	Pattern	Image	Note
TS21: forelimb	Present	Regionally restricted		Expression is proximal.
TS21: hindlimb	Present	Regionally restricted		Expression is proximal.

Structure	Level	Pattern	Image	Note
TS24: stomach	Weak