Probe:	Irx2 probe3
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS17: limb	Ambiguous		1J

Structure	Level	Pattern	Image	Note
TS19: limb	Ambiguous		1K

Structure	Level	Pattern	Image	Note
TS20: forelimb digit 1	Present	Regionally restricted	1L	The expression domain showed a border at the proximal part of the developing digits. Expression was not visible in the region of the phalange cartilage.
TS20: forelimb digit 5	Present	Regionally restricted	1L	The expression domain showed a border at the proximal part of the developing digits. Expression was not visible in the region of the phalange cartilage.

Structure	Level	Pattern	Image	Note
TS21: forelimb	Present		1M

Structure	Level	Pattern	Image	Note
TS22: forelimb digit	Present		1N

Structure	Level	Pattern	Image	Note
TS20: foot pre-cartilage condensation	Present	Regionally restricted	1O	Expression was detected in the metatarsal cartilage.

Structure	Level	Pattern	Image	Note
TS21: hindlimb digit 1	Present	Regionally restricted	1P	The expression domain showed a border at the proximal part of the developing digits. Expression was not visible in the region of the phalange cartilage.
TS21: hindlimb digit 5	Present	Regionally restricted	1P	The expression domain showed a border at the proximal part of the developing digits. Expression was not visible in the region of the phalange cartilage.

Structure	Level	Pattern	Image	Note
TS22: hindlimb digit	Present		1Q

Structure	Level	Pattern	Image	Note
TS21: digit mesenchyme	Present	Regionally restricted	4B	Expression was detected in condensed mesenchyme of digits 1 and 5.