Probe:	Xbp1 cDNA4
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS20: bone	Absent

Structure	Level	Pattern	Image	Note
TS22: mandible	Present	Regionally restricted	1i	Expression is in the bony periosteal cuff of the alveolar bone.

Structure	Level	Pattern	Image	Note
TS22: mandible	Present	Regionally restricted	1j	Expression is in the bony periosteal cuff of the alveolar bone.

Structure	Level	Pattern	Image	Note
TS22: rib cartilage condensation	Present	Regionally restricted	1k	Expression is in the outer bony cortex of the ribs.

Structure	Level	Pattern	Image	Note
TS22: rib cartilage condensation	Present	Regionally restricted	1l	Expression is in the outer bony cortex of the ribs.

Structure	Level	Pattern	Image	Note
TS24: mandible	Weak	Regionally restricted	2i	Expression is in the bony periosteal cuff and the internal bone trabeculae of the alveolar bone.

Structure	Level	Pattern	Image	Note
TS24: tooth	Weak		2j

Structure	Level	Pattern	Image	Note
TS24: rib	Weak	Regionally restricted	2k	Expression is in the outer bony cortex of the ribs.

Structure	Level	Pattern	Image	Note
TS24: rib	Weak	Regionally restricted	2l	Expression is in the outer bony cortex of the ribs.

Structure	Level	Pattern	Image	Note
TS26: lower jaw	Weak	Regionally restricted	4g	Expression is at the periosteum around the bone and in the cancellous bone of the alveolar bone.
TS26: periosteum	Weak	Regionally restricted	4g	Expression is at the periosteum around the bone and in the cancellous bone of the alveolar bone.

Structure	Level	Pattern	Image	Note
TS26: rib	Weak	Regionally restricted	4h	Expression is in the outer bony cortex.

Structure	Level	Pattern	Image	Note
TS26: dental papilla	Weak		4i