Probe:	Ets1 cDNA5
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS10: embryo	Absent		2A

Structure	Level	Pattern	Image	Note
TS28: endometrium	Present	Regionally restricted	2A	Expression is in the endothelium of vessels in the endometrium.
TS28: decidua	Present	Regionally restricted	2A	Expression is in endothelial cells.

Structure	Level	Pattern	Image	Note
TS12: trophectoderm	Absent		3A

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted	3A	Expression is in the endothelium.

Structure	Level	Pattern	Image	Note
TS14: allantois	Strong		4A
TS14: embryo mesoderm	Strong		4A
TS14: mesenchyme derived from splanchnopleure	Strong		4A
TS14: yolk sac blood vessel	Present	Regionally restricted	4C , 4A , 4B	Expression is in the blood islands.
TS14: trophoblast giant cell	Absent		4A

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted	4A , 4B , 4C	Expression is strongest in blood vessels that converge towards the ectoplacental cone.
TS28: endometrium	Present		4A , 4B , 4C
TS28: vasculature of uterus	Present		4A , 4B , 4C

Structure	Level	Pattern	Image	Note
TS18: labyrinthine zone	Strong	Regionally restricted	6A/B	Expression is in endothelial cells.
TS18: spongiotrophoblast	Absent		6A/B
TS18: trophoblast giant cell	Absent		6A/B

Structure	Level	Pattern	Image	Note
TS28: placenta	Present	Regionally restricted	6A/B	Expression is in endothelial cells of large sinusoids and in cells at the invasion front.

Structure	Level	Pattern	Image	Note
TS18: head mesenchyme	Strong	Regionally restricted	7A	Expression is surrounding the central nervous system and the optic appendages.
TS18: 1st branchial arch maxillary component	Strong		7A

Structure	Level	Pattern	Image	Note
TS18: trunk mesenchyme	Strong	Regionally restricted	7B	Expression is around the neural tube and the anterior cardinal vein.
TS18: 1st branchial arch mandibular component mesenchyme	Strong		7B
TS18: endocardial lining	Strong		7B
TS18: pharynx mesenchyme	Strong		7B
TS18: blood vessel	Strong	Regionally restricted	7B	Expression is in the wall of major blood vessels and small capillaries.
TS18: anterior cardinal vein	Strong	Regionally restricted	7B	Expression is in the wall.
TS18: dorsal aorta	Strong	Regionally restricted	7B	Expression is in the wall.
TS18: posterior cardinal vein	Strong	Regionally restricted	7B	Expression is in the wall.

Structure	Level	Pattern	Image	Note
TS18: hindgut mesentery	Strong		7C
TS18: mesenchyme derived from neural crest	Strong		7C
TS18: sclerotome	Strong		7C
TS18: trunk mesenchyme	Strong	Regionally restricted	7C	Expression is in the somatopleural mesoderm.
TS18: anterior cardinal vein	Strong	Regionally restricted	7C	Expression is in the wall.
TS18: dorsal aorta	Strong	Regionally restricted	7C	Expression is in the wall.
TS18: posterior cardinal vein	Strong	Regionally restricted	7C	Expression is in the wall.
TS18: blood vessel	Strong	Regionally restricted	7C	Expression is in the wall of major blood vessels and small capillaries.
TS18: limb mesenchyme	Weak		7C
TS18: dermomyotome	Absent		7C
TS18: epithelium	Absent		7C

Structure	Level	Pattern	Image	Note
TS18: trunk mesenchyme	Present	Regionally restricted		Expression is in mesenchymal cells surrounding the Wolffian ducts and the posterior cardinal vein walls.