Antibody:	anti-Eif3b (sc-271539)
Detection system:	Biotinylated secondary antibody/[Strept]avidin coupled to horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS21: cervical vertebral cartilage condensation	Present	Regionally restricted	1A	Expression is in the chondrocytes of the cartilaginous primordium of the basioccipital bone in the rostral part of the vertebral column with the forming cervical vertebrae.
TS21: intervertebral disc	Absent		1A

Structure	Level	Pattern	Image	Note
TS21: lower jaw tooth	Present		1B , S1
TS21: oral epithelium	Present	Regionally restricted	1B , S1	Expression is in the invaginating epithelium.
TS21: lower jaw tooth mesenchyme	Present	Regionally restricted	1B , S1	Expression is in the condensing mesenchyme, the dental papilla.

Structure	Level	Pattern	Image	Note
TS24: Meckel's cartilage	Present	Regionally restricted	1C	Expression is in chondrocytes.
TS24: basement membrane	Present		1D , 1C
TS24: mandible	Present	Regionally restricted	1D , 1C	Expression is in the osteoblasts and alveolar bone matrix of the alveolar bone.
TS24: lower jaw incisor	Present	Regionally restricted	1D , 1C	Expression is in dental pulp cells and in the stem cell niche of the cervical loop at the apical end.

Structure	Level	Pattern	Image	Note
TS27: molar dental papilla	Weak	Regionally restricted	2A	Expression is in odontoblasts.
TS27: molar enamel organ	Weak	Regionally restricted	2A	Expression is in ameloblasts.

Structure	Level	Pattern	Image	Note
TS27: basement membrane	Present	Regionally restricted	2B	Expression is in the basement membrane of the incisors.
TS27: incisor dental papilla	Present	Regionally restricted	2B	Expression is in odontoblasts.

Structure	Level	Pattern	Image	Note
TS27: alveolar process	Present		2C
TS27: molar dental papilla	Present	Regionally restricted	2C	Expression is in odontoblasts.
TS27: molar enamel organ	Present	Regionally restricted	2C	Expression is in ameloblasts.

Structure	Level	Pattern	Image	Note
TS27: extracellular matrix	Present		2D
TS27: incisor dental papilla	Present	Regionally restricted	2D	Expression is in odontoblasts.
TS27: incisor	Present	Regionally restricted	2D	Expression is at the mineralization front during the assembly of the calcified dentin matrix.

Structure	Level	Pattern	Image	Note
TS28: molar	Present		2E
TS28: molar dental papilla	Present	Regionally restricted	2E	Expression is in odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: incisor	Present		2F
TS28: incisor dental papilla	Present	Regionally restricted	2F	Expression is in odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: dentin	Strong		2G
TS28: extracellular matrix	Present		2G
TS28: molar	Present		2G
TS28: molar dental papilla	Present	Regionally restricted	2G	Expression is in odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: incisor	Present		2H
TS28: incisor dental papilla	Present	Regionally restricted	2H	Expression is in odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: alveolar process	Present		3B , 3A
TS28: dental pulp	Present		3B , 3A
TS28: dentin	Present		3B , 3A
TS28: extracellular matrix	Present		3B , 3A
TS28: lower jaw molar	Present		3B , 3A
TS28: lower jaw incisor dental papilla	Present	Regionally restricted	3A , 3B	Expression is in odontoblasts.
TS28: lower jaw molar dental papilla	Present	Regionally restricted	3A , 3B	Expression is in odontoblasts.

Structure	Level	Pattern	Image	Note
TS28: extracellular matrix	Present		3D , 3C
TS28: lower jaw molar	Present		3D , 3C
TS28: mandible	Present		3D , 3C
TS28: lower jaw incisor dental papilla	Present	Regionally restricted	3C , 3D	Expression is in odontoblasts.
TS28: lower jaw molar dental papilla	Present	Regionally restricted	3C , 3D	Expression is in odontoblasts.
TS28: alveolar process	Present	Regionally restricted	3D , 3C	Expression is in osteoblasts.

Structure	Level	Pattern	Image	Note
TS27: femur	Present	Regionally restricted	4A	Expression is in the growth plate region in the nuclei of chondrocytes and is absent in the hypertrophic chondrocytes of the growth plate.
TS27: extracellular matrix	Present	Regionally restricted	4A	Expression is in the extracellular matrix of the proliferating chondrocytes.

Structure	Level	Pattern	Image	Note
TS27: femur	Present	Regionally restricted	4B	Expression is in the growth plate region in the nuclei of chondrocytes.
TS27: extracellular matrix	Present	Regionally restricted	4B	Expression is in the extracellular matrix of the proliferating chondrocytes.

Structure	Level	Pattern	Image	Note
TS28: femur	Present	Regionally restricted	4C	Expression is in the growth plate region in the nuclei of chondrocytes.
TS28: extracellular matrix	Present	Regionally restricted	4C	Expression is in prehypertrophic extracellular matrix.
TS28: periosteum	Present		4C

Structure	Level	Pattern	Image	Note
TS28: femur	Present	Regionally restricted	4D	Expression is in the growth plate region in the nuclei of chondrocytes and is absent in the proliferating cells and in the cartilage matrix.
TS28: extracellular matrix	Present		4D

Structure	Level	Pattern	Image	Note
TS27: periosteum	Present		5B , 5A
TS27: long bone	Present	Regionally restricted	5A , 5B	Expression is in pre-osteoblasts.

Structure	Level	Pattern	Image	Note
TS27: periosteum	Present		5C , 5D
TS27: long bone	Present	Regionally restricted	5C , 5D	Expression is in pre-osteoblasts.

Structure	Level	Pattern	Image	Note
TS28: extracellular matrix	Present		6A , 6B
TS28: periosteum	Present		6A , 6B
TS28: long bone	Present	Regionally restricted	6B , 6A	Expression is in the mineralizing matrix and in osteocytes and osteoblasts.

Structure	Level	Pattern	Image	Note
TS28: periosteum	Present		6B inset

Structure	Level	Pattern	Image	Note
TS28: extracellular matrix	Present		6C , 6D
TS28: periosteum	Present		6C , 6D
TS28: long bone	Present	Regionally restricted	6C , 6D	Expression is osteocytes and osteoblasts, bone spicules of the primary spongiosa, and mineralized matrix of cortical bone.

Structure	Level	Pattern	Image	Note
TS28: long bone	Present	Regionally restricted	S3C	Expression is osteocytes and osteoblasts, bone spicules of the primary spongiosa, and mineralized matrix of cortical bone.