Probe:	Pax9 probe1
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS15: sclerotome	Present		5B

Structure	Level	Pattern	Image	Note
TS15: hindgut	Present	Regionally restricted	5D	Expression is in the epithelium caudal to the cloacal membrane.
TS15: trunk mesenchyme	Present	Regionally restricted	5D	Expression is in the ventral mesenchyme underlying the hindgut.
TS15: tail unsegmented mesenchyme	Absent		5D

Structure	Level	Pattern	Image	Note
TS17: trunk paraxial mesenchyme	Present	Regionally restricted	5F	Expression is in the mesenchymal cells of the perichordal tube surrounding the notochord.
TS17: sclerotome	Present		5F

Structure	Level	Pattern	Image	Note
TS19: axial skeleton	Strong	Regionally restricted	6B	Expression is in the mesenchymal condensations between the spinal nerves of two adjacent segments and further laterally. Expression in the medial condensation is weaker.

Structure	Level	Pattern	Image	Note
TS20: axial skeleton	Present	Regionally restricted	6E	Expression is in the anlagen of the intervertebral discs and around the anlagen of the vertebral bodies. Strong expression is lateral to the vertebral arteries and weak medially.

Structure	Level	Pattern	Image	Note
TS20: vertebral cartilage condensation	Present	Regionally restricted	6H	Expression extends dorsolaterally into the condensations for the neural arch and ventrolaterally into the mesenchyme that is lateral to the rib primordia.

Structure	Level	Pattern	Image	Note
TS20: tail mesenchyme	Present	Regionally restricted	6K	Absent in muscle primordia.
TS20: tail nervous system	Absent		6K

Structure	Level	Pattern	Image	Note
TS21: knee mesenchyme	Present	Regionally restricted	9B	Expression is in the mesenchyme between the tibia and femur primordia.

Structure	Level	Pattern	Image	Note
TS22: foot	Present	Regionally restricted	9E	Expression is anterior of the talus and naviculare primordia, between the cuneiformes and the proximal part of the metatarsals.

Structure	Level	Pattern	Image	Note
TS19: trunk	Present	Regionally restricted	10A/B	Expression is around and lateral to the vertebral arteries and weakly medially around the notochord and is the same as in wil-type.

Structure	Level	Pattern	Image	Note
TS20: trunk	Present	Regionally restricted	10C/D	Expression is between the spinal nerves and extends laterally while expression medially around the notochord is weaker.

Structure	Level	Pattern	Image	Note
TS22: trunk mesenchyme	Weak			Expression is in the mesenchyme between the capita of the ribs and between the neural arches and around the primordia of the vertebral bodies.
TS22: intervertebral disc	Weak
TS22: vertebral cartilage condensation	Weak	Regionally restricted		Expression is at sites of articulation.

Structure	Level	Pattern	Image	Note
TS24: tail vertebra	Trace
TS24: vertebra	Trace