Reporter:	lacZ
	Direct Detection

Structure	Level	Pattern	Image	Note
TS17: 1st branchial arch mandibular component ectoderm	Present		1A	Expressed in the epithelium.
TS17: 1st branchial arch maxillary component ectoderm	Present		1A	Expressed in the epithelium.
TS17: 1st branchial arch mandibular component mesenchyme	Present		1A
TS17: 1st branchial arch maxillary component mesenchyme	Present		1A

Structure	Level	Pattern	Image	Note
TS17: 1st branchial arch mandibular component ectoderm	Present		1B	Expressed in the epithelium.
TS17: 1st branchial arch mandibular component mesenchyme	Present		1B

Structure	Level	Pattern	Image	Note
TS19: latero-nasal process	Present	Regionally restricted	1C	Expressed in both the epithelium and mesenchyme of the lateral nasal processes.
TS19: medial-nasal process	Absent		1C

Structure	Level	Pattern	Image	Note
TS19: mandibular process	Present	Regionally restricted	1D	Expressed in both the epithelium and mesenchyme.
TS19: mandibular process mesenchyme	Present		1D

Structure	Level	Pattern	Image	Note
TS21: incisor epithelium	Present	Regionally restricted	1E	Expressed as a spherical ball at the anterior part of the tooth bud, where the enamel knot forms.
TS21: incisor mesenchyme	Present	Regionally restricted	1E	Expressed in the condensing mesenchyme.
TS21: vibrissa	Present		1E

Structure	Level	Pattern	Image	Note
TS21: incisor epithelium	Present	Regionally restricted	1F	Expressed as a spherical ball at the anterior part of the tooth bud, where the enamel knot forms.
TS21: incisor mesenchyme	Present	Regionally restricted	1F	Expressed in the condensing mesenchyme.

Structure	Level	Pattern	Image	Note
TS21: molar epithelium	Present	Regionally restricted	1G	Expressed in the developing enamel knots.
TS21: molar mesenchyme	Present	Regionally restricted	1G	Expressed in the mesenchyme surrounding the developing enamel knots.

Structure	Level	Pattern	Image	Note
TS21: molar epithelium	Present	Regionally restricted	1H	Expressed in the developing enamel knots.
TS21: molar mesenchyme	Present	Regionally restricted	1H	Expressed in the mesenchyme surrounding the developing enamel knots.

Structure	Level	Pattern	Image	Note
TS22: enamel knot	Strong		1I
TS22: tooth mesenchyme	Weak	Regionally restricted	1I	Expressed in the mesenchyme directly beneath the enamel knots.

Structure	Level	Pattern	Image	Note
TS22: enamel knot	Strong		1J
TS22: tooth mesenchyme	Weak	Regionally restricted	1J	Expressed in the mesenchyme directly beneath the enamel knots.

Structure	Level	Pattern	Image	Note
TS23: enamel organ	Present	Diffuse	1K	Expressed over a more diffuse area.
TS23: dental papilla	Present	Regionally restricted	1K	Expressed in the mesenchyme underlying the enamel organ.

Structure	Level	Pattern	Image	Note
TS26: secondary enamel knot	Present		1L
TS26: stellate reticulum	Present		1L
TS26: molar mesenchyme	Present	Regionally restricted	1L	Expressed in the odontoblasts underlying the enamel organ.

Structure	Level	Pattern	Image	Note
TS28: molar enamel organ	Present	Regionally restricted	2A	Expressed at the tips of the cusps in the region of the enamel-free zone.

Structure	Level	Pattern	Image	Note
TS28: molar enamel organ	Present	Regionally restricted	2B	Expressed in the cells sitting in the trough on the top of the cusps, with expression absent from the ameloblast cells surrounding the enamel on either side.

Structure	Level	Pattern	Image	Note
TS28: molar enamel organ	Present	Regionally restricted	2C	Expressed in the cells sitting in the trough on the top of the cusps, with expression absent from the ameloblast cells surrounding the enamel on either side.

Structure	Level	Pattern	Image	Note
TS28: molar dental pulp	Present	Regionally restricted	2D	Expressed in the developing odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: molar dental pulp	Strong	Regionally restricted	2E	Expressed in the odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: molar dental pulp	Present	Regionally restricted	2F	Expression in the odontoblasts started to diminish from cells nearest to the cusps.

Structure	Level	Pattern	Image	Note
TS28: molar enamel organ	Strong	Regionally restricted	3A	Expressed in the developing roots, concentrated around the root sheath.
TS28: molar dental papilla	Strong	Regionally restricted	3A	Expressed in the root forming regions.

Structure	Level	Pattern	Image	Note
TS28: molar enamel organ	Present	Regionally restricted	3B	Expressed in the developing roots, concentrated around the root sheath.
TS28: molar dental papilla	Present	Regionally restricted	3B	Expressed in the root forming regions.

Structure	Level	Pattern	Image	Note
TS28: Hertwig's epithelial root sheath	Present		3C
TS28: molar dental papilla	Present		3C
TS28: molar dental pulp	Present	Regionally restricted	3C	Expressed in the odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: Hertwig's epithelial root sheath	Present		3D
TS28: molar dental papilla	Present		3D
TS28: molar dental pulp	Present	Regionally restricted	3D	Expressed in the odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: molar root	Strong		3E
TS28: molar dental pulp	Present	Regionally restricted	3E	Reduced expression in the odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: molar enamel organ	Strong	Regionally restricted	3F	Expressed as a V-shape in the inter-radicular region between the roots.

Structure	Level	Pattern	Image	Note
TS27: incisor dental papilla	Weak	Regionally restricted	5A	Expressed in the dental follicle that surrounds the tooth.
TS27: incisor enamel organ	Strong	Regionally restricted	5A	Expressed in the nonameloblast epithelium adjacent to the dentine. No expression in the ameloblast layer.
TS27: incisor dental pulp	Weak	Regionally restricted	5A	Expressed in the odontoblasts.

Structure	Level	Pattern	Image	Note
TS27: dental sac	Present	Regionally restricted	5B	Expressed in the mesenchymal tissue surrounding the incisor.
TS27: incisor enamel organ	Present	Regionally restricted	5B	Expressed in the nonameloblast epithelium adjacent to the dentine. No expression in the ameloblast layer.

Structure	Level	Pattern	Image	Note
TS27: incisor enamel organ	Strong	Regionally restricted	5C	Expressed in the epithelial cells at the very tip. Expressed in the nonameloblast epithelium adjacent to the dentine. No expression in the ameloblast layer.
TS27: dental sac	Present	Regionally restricted	5C	Expressed in the mesenchymal tissue surrounding the incisor.
TS27: incisor dental pulp	Weak	Regionally restricted	5C	Expressed in the odontoblasts.

Structure	Level	Pattern	Image	Note
TS27: incisor enamel organ	Strong	Regionally restricted	5D	Expressed in the nonameloblast epithelium adjacent to the dentine.
TS27: dental sac	Present	Regionally restricted	5D	Expressed in the mesenchymal tissue surrounding the incisor.

Structure	Level	Pattern	Image	Note
TS28: cervical loop	Strong	Regionally restricted	5E	Expressed in the odontoblasts at the cervical loop.

Structure	Level	Pattern	Image	Note
TS28: cervical loop	Present	Regionally restricted	5F	Expressed in the odontoblasts at the cervical loop. No expression in the odonoblasts at the tip.

Structure	Level	Pattern	Image	Note
TS28: jaw bone	Present	Regionally restricted	5G	Expressed in the bone surrounding the tooth.
TS28: dental sac	Present		5G	Expressed in the mesenchyme.

Structure	Level	Pattern	Image	Note
TS28: dental sac	Present		5H	Expressed in the mesenchyme.