Antibody:	anti-LMP-l
Detection system:	Secondary antibody coupled to horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS21: enamel organ	Present		1A
TS21: tooth mesenchyme	Absent		1A

Structure	Level	Pattern	Image	Note
TS22: lower jaw molar enamel organ	Present		1B	Expression is in the inner and outer enamel epithelium, stellate reticulum, and enamel knot.
TS22: enamel knot	Present		1B
TS22: inner enamel epithelium	Present		1B
TS22: outer enamel epithelium	Present		1B
TS22: stellate reticulum	Present		1B
TS22: lower jaw incisor dental follicle	Present		1B
TS22: lower jaw molar dental papilla	Present		1B

Structure	Level	Pattern	Image	Note
TS24: lower jaw molar enamel organ	Present	Regionally restricted	1C	Expression is in the inner and outer enamel epithelium, stratum intermedium, and is absent in the stellate reticulum.
TS24: inner enamel epithelium	Present		1C
TS24: outer enamel epithelium	Present		1C
TS24: stratum intermedium	Present		1C
TS24: stellate reticulum	Absent		1C
TS24: lower jaw molar dental papilla	Present	Regionally restricted	1C	Expression is converged at cusps in dental papilla and is intense in osteoblasts.

Structure	Level	Pattern	Image	Note
TS24: lower jaw molar enamel organ	Present	Regionally restricted	1D	Expression is in the inner and outer enamel epithelium, stratum intermedium, and is absent in the stellate reticulum.
TS24: inner enamel epithelium	Present		1D
TS24: outer enamel epithelium	Present		1D
TS24: stratum intermedium	Present		1D
TS24: stellate reticulum	Absent		1D
TS24: lower jaw molar dental papilla	Present	Regionally restricted	1D	Expression is converged at cusps in dental papilla and is intense in osteoblasts.

Structure	Level	Pattern	Image	Note
TS26: lower jaw molar enamel organ	Present	Regionally restricted	1E	Expression is in the stratum intermedium, weak in other types of enamel organ and differentiated odontoblasts.
TS26: stratum intermedium	Present		1E
TS26: lower jaw molar dental papilla	Present	Regionally restricted	1E	Expression is in differentiating papilla cells at the cusps.
TS26: lower jaw molar dental follicle	Present		1E
TS26: blood vessel endothelium	Strong		1E

Structure	Level	Pattern	Image	Note
TS26: lower jaw molar enamel organ	Present	Regionally restricted	1F	Expression is in the stratum intermedium, weak in other types of enamel organ and differentiated odontoblasts.
TS26: stratum intermedium	Present		1F
TS26: lower jaw molar dental papilla	Present	Regionally restricted	1F	Expression is in differentiating papilla cells at the cusps.
TS26: lower jaw molar mesenchyme	Present	Regionally restricted	1F
TS26: blood vessel	Strong	Regionally restricted	1F

Structure	Level	Pattern	Image	Note
TS27: stratum intermedium	Strong		2A
TS27: lower jaw molar	Very strong	Regionally restricted	2A	Expression is in osteoblasts and is absent in in differentiated and secretory ameloblasts and odontoblasts.
TS27: lower jaw molar dental follicle	Present		2A
TS27: dental pulp	Absent		2A

Structure	Level	Pattern	Image	Note
TS27: stratum intermedium	Strong		2B
TS27: lower jaw tooth	Very strong	Regionally restricted	2B	Expression is in dental follicle cells and osteoblasts and is absent in in differentiated and secretory ameloblasts and odontoblasts.
TS27: dental sac	Present		2B
TS27: dental pulp	Absent		2B

Structure	Level	Pattern	Image	Note
TS28: lower jaw molar dental follicle	Weak		2C
TS28: dental pulp	Absent		2C	Expression is absent in odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: lower jaw molar dental follicle	Weak		2D
TS28: dental pulp	Absent		2D	Expression is absent in odontoblasts.