Probe:	ST3 cDNA2
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS13: extraembryonic component	Strong	Regionally restricted	1A/B	Expression at the fetomaternal junction, absent in egg cylinder and maternal tissues.
TS28: decidua	Strong	Regionally restricted	1A/B	Expression at the fetomaternal junction, absent in egg cylinder and maternal tissues.

Structure	Level	Pattern	Image	Note
TS13: extraembryonic component	Present	Regionally restricted	1C	Expression in giant trophoblastic cells, absent in egg cylinder and maternal tissues.
TS28: decidua	Present	Regionally restricted	1C	Expression in giant trophoblastic cells, absent in egg cylinder and maternal tissues.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted		Expression in small cells disseminated in the maternal tissue at some distance away from the embryo.

Structure	Level	Pattern	Image	Note
TS21: limb interdigital region mesenchyme	Present
TS21: interdigital region epithelium	Absent

Structure	Level	Pattern	Image	Note
TS19: embryo	Absent		3A

Structure	Level	Pattern	Image	Note
TS20: head	Present	Regionally restricted	3B	Expression in the snout.
TS20: spinal cord	Present		3B

Structure	Level	Pattern	Image	Note
TS21: head	Present	Regionally restricted	3C	Expression in the snout.
TS21: spinal cord	Present		3C
TS21: tail	Present		3C

Structure	Level	Pattern	Image	Note
TS22: head	Present	Regionally restricted	3D	Expression in the snout.
TS22: tail	Present		3D
TS22: limb	Present		3D
TS22: testis	Present		3D
TS22: lung	Present		3D

Structure	Level	Pattern	Image	Note
TS23: head	Present	Regionally restricted	3E	Expression in the snout.
TS23: tail	Present		3E
TS23: lung	Present		3E

Structure	Level	Pattern	Image	Note
TS24: head	Present	Regionally restricted	3F	Expression in the snout.
TS24: tail	Present		3F
TS24: limb	Present		3F
TS24: lung	Present		3F
TS24: skeleton	Present	Regionally restricted	3F	Expression in bone.

Structure	Level	Pattern	Image	Note
TS24: embryo	Present		3G

Structure	Level	Pattern	Image	Note
TS24: limb	Present	Regionally restricted	4A	Expression in mesenchymal cells underlying the primitive epiderm.

Structure	Level	Pattern	Image	Note
TS24: tail	Present	Regionally restricted	4B	Expression in mesenchymal cells underlying the primitive epiderm.

Structure	Level	Pattern	Image	Note
TS24: head	Present	Regionally restricted	4C	Expression in mesenchymal cells underlying the primitive epiderm of the snout.
TS24: vibrissa	Absent		4C	The primordia of the vibrissa.

Structure	Level	Pattern	Image	Note
TS23: axial skeleton	Present			Expression in osteogenic tissues, in areas of membrane bone formation.

Structure	Level	Pattern	Image	Note
TS26: axial skeleton	Strong	Regionally restricted	5A/B	Expression in the ossification center, absent in cartilage of the vertebrae.

Structure	Level	Pattern	Image	Note
TS24: tibia	Present	Regionally restricted	6A/C	Expression in the sites of bone formation within the marrow cavity and lining of the perioteum, absent in cartilage.

Structure	Level	Pattern	Image	Note
TS24: fibula	Present	Regionally restricted	6B	Expression in the sites of bone formation within the marrow cavity and lining of the perioteum, absent in cartilage.

Structure	Level	Pattern	Image	Note
TS24: fibula	Present	Regionally restricted	6D	Expression in the sites of bone formation within the marrow cavity and lining of the perioteum, absent in cartilage.

Structure	Level	Pattern	Image	Note
TS20: spinal cord floor plate	Present		7A/B
TS20: notochord	Absent		7A/B
TS20: axial skeleton	Absent		7A/B	Cartilage primordium of the vertebral body.

Structure	Level	Pattern	Image	Note
TS25: limb	Present
TS25: tail	Present
TS25: head	Present	Regionally restricted		Expression in the snout.

Structure	Level	Pattern	Image	Note
TS26: limb	Present
TS26: tail	Present
TS26: head	Present	Regionally restricted		Expression in the snout.

Structure	Level	Pattern	Image	Note
TS26: tail	Present
TS26: head	Present	Regionally restricted		Expression in the snout.