Antibody:	Anti-Sp7/Osterix antibody (ab22552)
Detection system:	Secondary antibody coupled to horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS22: sphenoid bone	Present	Scattered	1G	Positive cells are scattered throughout the region of mesenchymal cell condensation in the medial pterygoid process region of sphenoid bone.

Structure	Level	Pattern	Image	Note
TS22: sphenoid bone	Present	Single cells	1H	There are a few scattered positive cells in the medial pterygoid process region of sphenoid bone.

Structure	Level	Pattern	Image	Note
TS23: sphenoid bone	Present	Scattered	2G	Positive cells are scattered around the osteoid, and small flattened cells are located at the cranial region of mesenchymal-cell condensation.

Structure	Level	Pattern	Image	Note
TS23: sphenoid bone	Present	Single cells	2H	There are a few positive cells scattered at the cranial region of mesenchymal-cell condensation.

Structure	Level	Pattern	Image	Note
TS24: sphenoid bone	Present	Scattered	3G	Positive cells are scattered around the trabecular bones and the cartilage at the lower part of the medial pterygoid process region.

Structure	Level	Pattern	Image	Note
TS24: sphenoid bone	Present	Regionally restricted	3H	Positive cells were seen beneath the cartilage and at the medial pterygoid process.

Structure	Level	Pattern	Image	Note
TS26: sphenoid bone	Present	Regionally restricted	4G	Positive cells are scattered in two-thirds of the cranial side of the medial pterygoid process around the trabecular bones and beneath the cartilage in the lower part of the medial pterygoid process region.

Structure	Level	Pattern	Image	Note
TS26: sphenoid bone	Present		4H	Positive cells are distributed at the central area in osteoid-like tissue and beneath the cartilage of the medial pterygoid process region.