Antibody:	Purified Rat Anti-Mouse Ly-6A/E (clone D7)
Detection system:	Secondary antibody coupled to fluorescein

Structure	Cell Type	Level	Pattern	Image	Note
TS28: endometrium luminal epithelium		Strong		4A
TS28: myometrium	myometrial cell	Present		4A
TS28: vasculature of uterus	endothelial cell of uterus	Present		4A

Structure	Cell Type	Level	Pattern	Image	Note
TS28: endometrium luminal epithelium		Present		4B	Reduced expression compared with the estrus phase uteri.
TS28: myometrium	myometrial cell	Present		4B
TS28: vasculature of uterus	endothelial cell of uterus	Present		4B
TS28: endometrium stroma		Present	Regionally restricted	4B	The endometrial stromal cells around the implanted embryo were positively stained.

Structure	Level	Pattern	Image	Note
TS7: embryo	Ambiguous			Trace or no expression.

Structure	Level	Pattern	Image	Note
TS28: endometrium stroma	Present	Regionally restricted	4C	Only the endometrial stromal cells around the implanted embryo were positively stained (Fig 4B), those at the interimplantation site were not.