Probe:	pbH1.8-320E-S
Probe preparation:	RNA

Structure	Level	Pattern	Image	Note
TS21: limb	Present	Graded	1a Hoxa-10	Transcripts were preferentially expressed around the differentiating skeletal elements of the proximal segments of the limbs. Transcripts were much more diffuse in distal regions and decreased toward the footplates.
TS21: femur cartilage condensation	Strong		1a Hoxa-10
TS21: humerus cartilage condensation	Strong		1a Hoxa-10
TS21: radius-ulna cartilage condensation	Moderate		1d Hoxa-10	Transcripts had a more diffuse distribution than Hoxd11 transcripts.

Structure	Level	Pattern	Image	Note
TS22: femur cartilage condensation	Present	Graded	1b Hoxa-10	Expression was detected around the femur primordium, with higher transcript levels toward its proximal extremity in the area of the presumptive trochanter, and around its distal extremity.
TS22: knee mesenchyme	Present		1b Hoxa-10	Hoxa10 transcripts were more widely distributed than Hoxd10 transcripts in the mesenchyme of the developing knee region.
TS22: forelimb	Present	Graded	1b Hoxa-10	Expression patterns in the developing forelimb, similar to those in the hindlimb, were observed at 14.5 dpc.

Structure	Level	Pattern	Image	Note
TS20: hand	Weak		1c Hoxa-10
TS20: radius-ulna pre-cartilage condensation	Moderate		1c Hoxa-10	Hoxa10 transcripts were more diffusely distributed than Hoxd11 transcripts.