Probe:	Dkk1 cDNA9
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS20: mandibular process mesenchyme	Present		1A
TS20: vomeronasal organ	Present	Regionally restricted	1A	Expression was detected in the lower region of the vomeronasal organ.
TS20: nasal septum	Strong	Regionally restricted	1A	High expression was detected in the lower part of the nasal septum below vomeronasal organ.

Structure	Level	Pattern	Image	Note
TS20: notochord	Present	Regionally restricted	1B	Expression was detected in the notochord in the area of the basioccipital precursor.
TS20: brain	Present	Regionally restricted	1B	Expression was detected in the ventral plate of the brain.

Structure	Level	Pattern	Image	Note
TS21: face mesenchyme	Present	Regionally restricted	1C	Expression was detected in the sub-epithelial mesenchyme in the frontonasal mass.
TS21: mandible mesenchyme	Present	Regionally restricted	1C	Expression was restricted to the rostal area.

Structure	Level	Pattern	Image	Note
TS21: vomeronasal organ	Present	Regionally restricted	1D	Expression intensified in the lower part of the vomeronasal organ.

Structure	Level	Pattern	Image	Note
TS21: chondrocranium pre-cartilage condensation	Present	Regionally restricted	1E	Expression was highly present in the squamous occipital precursors.

Structure	Level	Pattern	Image	Note
TS22: oral epithelium	Present		1F
TS22: tongue	Present	Regionally restricted	1F	Expression was in the ventral tongue.
TS22: palatal shelf epithelium	Present		1F	Expression was detected in the epithelium of the primary and secondary palate.

Structure	Level	Pattern	Image	Note
TS22: oral epithelium	Present		1G
TS22: tongue	Present	Regionally restricted	1G	Expression was in ventral tongue.
TS22: Meckel's cartilage	Present	Regionally restricted	1G	Expression was detected in the perichondrial mesenchyme of Meckel's cartilage.

Structure	Level	Pattern	Image	Note
TS22: olfactory epithelium	Present		1H

Structure	Level	Pattern	Image	Note
TS23: basioccipital bone	Present		1I
TS23: head bone	Present	Regionally restricted	1I	Expression was observed in osteogenic cells of both endochondral and intramembranous bones.

Structure	Level	Pattern	Image	Note
TS24: Meckel's cartilage	Present		1J	Expression was detected in individual chondrocytes within Meckel's cartilage.
TS24: mandible	Present		1J	Expression was detected in the osteogenic cells in the mandible.
TS24: head bone	Present	Regionally restricted	1J	Expression was observed in osteogenic cells of both endochondral and intramembranous bones.

Structure	Level	Pattern	Image	Note
TS25: tongue muscle	Present		1K

Structure	Level	Pattern	Image	Note
TS27: palatine bone	Present		1L
TS27: tongue muscle	Present		1L

Structure	Level	Pattern	Image	Note
TS27: tongue muscle	Present		1M
TS27: basicranium	Present		1M	Expression was detected in endochondral basicranium.

Structure	Level	Pattern	Image	Note
TS27: tongue muscle	Present		1N