Probe:	Clone 4311
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography
Assay notes:	Some of the sections used in these studies were cryosections, others were embedded in ester wax. It was not always clear which specimen preparation method was used for the specimens in the figures.

Structure	Level	Pattern	Image	Note
TS9: ectoplacental cone	Present	Regionally restricted		Expression is present in a a few, isolated cells.

Structure	Level	Pattern	Image	Note
TS11: ectoplacental cone	Present	Regionally restricted	6A/B	Expression is present in a subset of cells at the mesometrial end.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present	Regionally restricted		Expression is present in a few, isolated cells.

Structure	Level	Pattern	Image	Note
TS13: extraembryonic component	Present	Regionally restricted	6D , 6C	Expression is present in outer ectoplacental cone cells, in a region just below the giant cell layer.

Structure	Level	Pattern	Image	Note
TS15: extraembryonic component	Strong	Regionally restricted	6E	Expression is present in outer ectoplacental cone cells, in a region just below the giant cell layer.

Structure	Level	Pattern	Image	Note
TS17: extraembryonic component	Strong	Regionally restricted	6F	Expression is present in outer ectoplacental cone cells, in a region just below the giant cell layer.

Structure	Level	Pattern	Image	Note
TS28: placenta	Strong	Regionally restricted	7A	There is intense, patchy hybridization in the spongiotrophoblast; there is no hybridization to the giant cells or to the labyrinthine layer.
TS21: extraembryonic component	Present	Regionally restricted	7A	There is some hybridization of cells in the mesometrial decidual tissue. Other studies suggest these cells are derived from the trophoblast of the conceptus.

Structure	Level	Pattern	Image	Note
TS21: embryo	Absent

Structure	Level	Pattern	Image	Note
TS28: placenta	Strong	Regionally restricted	7B	There is intense, patchy hybridization in the spongiotrophoblast; there is no hybridization to the giant cells or to the labyrinthine layer.
TS23: extraembryonic component	Present	Regionally restricted	7B	There is some hybridization of cells in the mesometrial decidual tissue. Other studies suggest these cells are derived from the trophoblast of the conceptus.

Structure	Level	Pattern	Image	Note
TS23: embryo	Absent

Structure	Level	Pattern	Image	Note
TS28: placenta	Strong	Regionally restricted	7C	There is intense, patchy hybridization in the spongiotrophoblast; there is no hybridization to the giant cells or to the labyrinthine layer.
TS26: extraembryonic component	Present	Regionally restricted	7C	There is some hybridization of cells in the mesometrial decidual tissue. Other studies suggest these cells are derived from the trophoblast of the conceptus.

Structure	Level	Pattern	Image	Note
TS26: embryo	Absent