Probe:	Sulf2 cDNA3
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS15: olfactory placode	Present		1D
TS15: somite	Present		1D
TS15: telencephalon	Present		1D
TS15: tail	Present	Regionally restricted	1D	Expression is at the tip.

Structure	Level	Pattern	Image	Note
TS17: limb mesenchyme	Strong		1E
TS17: nasal pit	Present		1E
TS17: somite	Present		1E
TS17: telencephalon	Present		1E
TS17: tail	Present	Regionally restricted	1E	Expression is at the tip.

Structure	Level	Pattern	Image	Note
TS19: nasal pit	Present		1F
TS19: somite	Present		1F
TS19: telencephalon	Present		1F
TS19: tail	Present	Regionally restricted	1F	Expression is at the tip.

Structure	Level	Pattern	Image	Note
TS17: 1st branchial arch mandibular component mesenchyme	Strong		1I
TS17: limb mesenchyme	Strong		1I
TS17: floor plate	Present		1I
TS17: 1st branchial arch ectoderm	Absent		1I

Structure	Level	Pattern	Image	Note
TS17: 1st branchial arch mandibular component mesenchyme	Strong	Regionally restricted	1Q
TS17: limb mesenchyme	Strong	Regionally restricted	1Q
TS17: apical ectodermal ridge	Absent		1Q

Structure	Level	Pattern	Image	Note
TS19: hindlimb bud mesenchyme	Present	Regionally restricted	1R	Areas of condensing mesenchyme have weaker expression.

Structure	Level	Pattern	Image	Note
TS20: hindlimb mesenchyme	Present	Regionally restricted	1S	Areas of condensing mesenchyme have weaker expression.

Structure	Level	Pattern	Image	Note
TS20: hindlimb mesenchyme	Present	Regionally restricted	1T	Areas of condensing mesenchyme have weaker expression.
TS20: hindlimb	Present	Regionally restricted	1T	Expression is in synovial joints.

Structure	Level	Pattern	Image	Note
TS22: foot joint	Present	Regionally restricted	1U	Expression is in synovial joints.

Structure	Level	Pattern	Image	Note
TS22: hand joint	Present	Regionally restricted	2B	Expression is in synovial joints.
TS22: forelimb cartilage condensation	Present	Regionally restricted	2B	Expression is in proliferating chondrocytes.

Structure	Level	Pattern	Image	Note
TS24: elbow joint	Present		2D
TS24: forelimb joint	Present		2D
TS24: forelimb skeleton	Present	Regionally restricted	2D	Expression is in proliferating chondrocytes. Absent in the perichodrium and present in the neighboring connective tissue.

Structure	Level	Pattern	Image	Note
TS22: axial skeleton	Present	Regionally restricted	2F	Expression is in fibrocartilaginous joints between individual sternebrae and between the sternum and ribs.
TS22: skeleton	Present	Regionally restricted	2F	Expression is in proliferating chondrocytes.

Structure	Level	Pattern	Image	Note
TS24: elbow joint	Present		2H
TS24: forelimb joint	Present		2H

Structure	Level	Pattern	Image	Note
TS22: tooth mesenchyme	Strong		2J

Structure	Level	Pattern	Image	Note
TS24: lower jaw molar	Strong	Regionally restricted	2L	Expression is in the pulp of the teeth.