Probe:	activin beta A cDNA
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS7: embryo	Absent

Structure	Level	Pattern	Image	Note
TS9: embryo	Absent

Structure	Level	Pattern	Image	Note
TS11: embryo	Absent

Structure	Level	Pattern	Image	Note
TS13: embryo	Absent

Structure	Level	Pattern	Image	Note
TS15: embryo	Absent

Structure	Level	Pattern	Image	Note
TS28: uterus	Absent			No expression in the nonpregnant uterus.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted	2A/B	Expression in small clusters of decidual cells. Authors describe small patches of subepithelial uterine stromal cells at or near the apparent implantation site.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present		2C

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted	2D/E	Expression within the primary decidual zone in a few large and medium-sized decidual cells located a few cell layers distal to the antimesometrial pole of the embryo.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present		2F

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Scattered	2G/H	Expression in scattered cells distal to ventral pole of egg cylinder and in few cells beside embryo. High expression in some cells near giant trophoblast cells. Extends mesometrially to cells around ectoplacental cone and underlying uterine epithelium.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted	2I	Expression in isolated or clustered large and medium-sized decidual cells.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted	3A/B	High expression in clusters of cells beside embryo, next to giant trophoblast cells. Moderate expression in small decidual cells of implantation zone next to distal tip of embryo. Expression near ventral pole of embryo and beside embryo.

Structure	Level	Pattern	Image	Note
TS28: decidua	Weak	Regionally restricted		Decreased expression in decidual cells around the embryo.

Structure	Level	Pattern	Image	Note
TS28: decidua	Trace	Regionally restricted	3C/D	Authors state that little expression remained in decidual cells around the embryo.

Structure	Level	Pattern	Image	Note
TS28: decidua	Strong	Single cells	3E	High expression in large decidual cells next to giant trophoblast cells beside the embryo.

Structure	Level	Pattern	Image	Note
TS28: decidua	Strong	Single cells	3G	High level of expression in groups of cells beneath the luminal uterine epithelium.

Structure	Level	Pattern	Image	Note
TS28: decidua	Strong	Single cells	3H	High level of expression in isolated large cells scattered amond the developing sinusoids of the decidua and around the ectoplacental cone.

Structure	Level	Pattern	Image	Note
TS28: decidua	Strong	Regionally restricted	4A/B	High expression in decidual cells near the luminal uterine epithelium, and adjacent to invading giant trophoblast cells just above the embryonic placenta.

Structure	Level	Pattern	Image	Note
TS28: decidua	Strong	Regionally restricted	4C	High expression in decidual cells near the luminal uterine epithelium, and adjacent to invading giant trophoblast cells just above the embryonic placenta.