Probe:	Hoxa10 cDNA3
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS20: limb mesenchyme	Present	Regionally restricted	4A	Expressed in a band of mesenchyme along the proximal-distal axis. The proximal and distal boundaries correspond approximately to the zeugopod which will form the radius and ulna. But excluded from cartilaginous condensations within this region.

Structure	Level	Pattern	Image	Note
TS20: somite	Strong	Regionally restricted	4D	Expressed in the posterior somites, with a sharp anterior boundary at L1.
TS20: dorsal root ganglion	Present	Regionally restricted	4D	The anterior limit of expression is slightly more rostral than in the somites.
TS20: spinal cord	Present	Regionally restricted	4D	The anterior limit of expression is slightly more rostral than in the somites.
TS20: genital tubercle	Present		4D
TS20: ureteral mesenchyme	Present		4D
TS20: nephric duct, mesonephric portion	Present	Regionally restricted	4D	Expressed in the surrounding urogenital mesenchyme.
TS20: paramesonephric duct	Present	Regionally restricted	4D	Expressed in the surrounding urogenital mesenchyme.
TS20: epithelial layer of ureter	Absent		4D

Structure	Level	Pattern	Image	Note
TS20: gut mesenchyme	Present	Regionally restricted		Expressed in the mesenchyme of herniated gut.

Structure	Level	Pattern	Image	Note
TS22: mesenchyme of metanephros	Very strong	Regionally restricted		Expressed in regions immediately surrounding the mesonephric and paramesonephric ducts.