Antibody:	SEtdc3
Detection system:	Secondary antibody
Assay notes:	This data was discussed but not shown.

Structure	Level	Pattern	Image	Note
TS21: lower jaw incisor epithelium	Present			Expression is concentrated in the basement membrane and in cells of the invaginating epithelium.

Structure	Level	Pattern	Image	Note
TS22: lower jaw incisor epithelium	Present	Regionally restricted		Expression is present along the basement membrane underlying the inner dental epithelium, as well as the outer dental epithelium. The labial part of the cervical loop demonstrated a strong immunoreactivity when compared to the lingual side.
TS22: cervical loop	Present	Non-Uniform		The labial part of the cervical loop demonstrated a strong immunoreactivity when compared to the lingual side.

Structure	Level	Pattern	Image	Note
TS23: lower jaw incisor epithelium	Present	Regionally restricted		Expression is present in the basement membrane along the outer dental epithelium, whereas weak or negligible staining is seen along the inner dental epithelium. When compared to the lingual side, the labial side of the cervical loop is intensely stained.
TS23: cervical loop	Present	Non-Uniform		When compared to the lingual side, the labial side of the cervical loop is intensely stained.

Structure	Level	Pattern	Image	Note
TS25: inner enamel epithelium	Strong	Regionally restricted		There is intense immunoreactivity in the differentiating ameloblasts.
TS25: lower jaw incisor epithelium	Strong	Regionally restricted		There is intense immunoreactivity in the differentiating ameloblasts.

Structure	Level	Pattern	Image	Note
TS26: lower jaw molar epithelium	Absent			There is no expression along the inner dental epithelium.