Probe:	ArsI_#47
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS20: notochord	Present		1E
TS20: vertebral cartilage condensation	Present		1E

Structure	Level	Pattern	Image	Note
TS22: Meckel's cartilage	Present		1F
TS22: basioccipital cartilage condensation	Present		1F	Expression was detected in the parachordal plate (future basioccipital and basisphenoid bones).
TS22: basisphenoid cartilage condensation	Present		1F	Expression was detected in the parachordal plate (future basioccipital and basisphenoid bones).

Structure	Level	Pattern	Image	Note
TS20: notochord	Present		1S
TS20: vertebral cartilage condensation	Present		1S

Structure	Level	Pattern	Image	Note
TS22: Meckel's cartilage	Present		1T
TS22: basioccipital cartilage condensation	Present		1T	Expression was detected in the parachordal plate (future basioccipital and basisphenoid bones).
TS22: basisphenoid cartilage condensation	Present		1T	Expression was detected in the parachordal plate (future basioccipital and basisphenoid bones).

Structure	Level	Pattern	Image	Note
TS22: esophagus	Present		2K
TS22: stomach	Present		2K

Structure	Level	Pattern	Image	Note
TS22: stomach	Present		2L

Structure	Level	Pattern	Image	Note
TS22: stomach	Present		2M

Structure	Level	Pattern	Image	Note
TS22: telencephalon	Present	Regionally restricted	3A	Expression was detected in the cortical hem.
TS22: choroid plexus	Absent		3A
TS22: Meckel's cartilage	Present		3A
TS22: otic capsule	Present		3A
TS22: head mesenchyme	Present	Regionally restricted	3A	Expression was detected surrounding the parachordal plate (future basioccipital and basisphenoid bones).

Structure	Level	Pattern	Image	Note
TS22: lens epithelium	Present		4A
TS22: cornea	Absent		4A
TS22: lens fiber	Absent		4A

Structure	Level	Pattern	Image	Note
TS24: lens epithelium	Present		4G
TS24: cornea	Absent		4G
TS24: lens fiber	Absent		4G

Structure	Level	Pattern	Image	Note
TS22: ulna cartilage condensation	Present	Regionally restricted	5B	Expression was detected in prehypertrophic chondrocytes.
TS22: elbow joint primordium	Present		5B

Structure	Level	Pattern	Image	Note
TS24: ulna	Present	Regionally restricted	5H	Expression was detected in prehypertrophic and hypertrophic chondrocytes.

Structure	Level	Pattern	Image	Note
TS20: limb	Absent		6E

Structure	Level	Pattern	Image	Note
TS21: limb digit	Present	Regionally restricted	6F	Expression was detected in the tip of the digits.

Structure	Level	Pattern	Image	Note
TS22: forelimb digit	Present	Regionally restricted	6K	Expression was detected in the tip of the digits.

Structure	Level	Pattern	Image	Note
TS22: radius cartilage condensation	Present	Regionally restricted	6L	Expression was detected in prehypertrophic chondrocytes.

Structure	Level	Pattern	Image	Note
TS17: limb	Absent