Antibody:	anti-inhibin betaA
Detection system:	Secondary antibody coupled to horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS28: corpus luteum	Strong
TS28: ovary follicle	Strong

Structure	Level	Pattern	Image	Note
TS28: epithelial layer of oviduct	Present		1D

Structure	Level	Pattern	Image	Note
TS28: endometrium luminal epithelium	Weak		1E

Structure	Level	Pattern	Image	Note
TS28: endometrium glandular epithelium	Present		1F
TS28: endometrium luminal epithelium	Present		1F

Structure	Level	Pattern	Image	Note
TS28: uterus stroma	Strong	Single cells	1G	Subepithelial (likely immune) cells are strongly stained.

Structure	Level	Pattern	Image	Note
TS28: endometrium epithelium	Ambiguous			Immunostaining is minimal or absent in metestrous.

Structure	Level	Pattern	Image	Note
TS28: endometrium epithelium	Ambiguous			Immunostaining is minimal or absent in diestrous.

Structure	Level	Pattern	Image	Note
TS28: endometrium glandular epithelium	Present		4A
TS28: endometrium luminal epithelium	Present		4A
TS28: decidua	Present		4A	Expression is seen in the stromal zone underlying the luminal epithelium, particularly in the anti-mesometrial region.

Structure	Level	Pattern	Image	Note
TS28: decidua	Strong	Regionally restricted	4B	Staining is intense and polarized at the anti-mesometrial zone, where the primary decidual response occurs.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present		4C	Expression is seen in the primary decidual zone.

Structure	Level	Pattern	Image	Note
TS28: endometrium glandular epithelium	Strong		4D
TS28: decidua	Trace		4D	There is minimal immunoreactivity in the luminal epithelium and stroma.
TS28: endometrium luminal epithelium	Trace		4D	There is minimal immunoreactivity in the luminal epithelium and stroma.

Structure	Level	Pattern	Image	Note
TS7: conceptus	Present		4E
TS28: decidua	Strong	Regionally restricted	4E	The stroma immediately surrounding the embryo is devoid of immunostaining; there is intense immunoreactivity in the anti-mesometrial and mesometrial zones distant to the implanting embryo.
TS28: decidua capsularis	Strong	Regionally restricted	4E	The stroma immediately surrounding the embryo is devoid of immunostaining; there is intense immunoreactivity in the anti-mesometrial and mesometrial zones distant to the implanting embryo.

Structure	Level	Pattern	Image	Note
TS28: endometrium glandular epithelium	Strong		4E

Structure	Level	Pattern	Image	Note
TS7: conceptus	Strong		4F	Staining is observed in the developing embryonic and extraembryonic structures.
TS28: decidua	Strong	Regionally restricted	4F	The stroma immediately surrounding the embryo is devoid of immunostaining; there is intense immunoreactivity in the anti-mesometrial and mesometrial zones distant to the implanting embryo.
TS28: decidua capsularis	Strong	Regionally restricted	4F	The stroma immediately surrounding the embryo is devoid of immunostaining; there is intense immunoreactivity in the anti-mesometrial and mesometrial zones distant to the implanting embryo.

Structure	Level	Pattern	Image	Note
TS28: decidua basalis	Present	Regionally restricted	4G	Expression is limited to the basal zone adjacent to the myometrium.
TS9: conceptus	Strong		4G	Staining is observed in the developing embryonic and extraembryonic structures.

Structure	Level	Pattern	Image	Note
TS9: conceptus	Strong		4H	Staining is observed in the developing embryonic and extraembryonic structures.

Structure	Level	Pattern	Image	Note
TS13: conceptus	Strong		4I	Staining is observed in the developing embryonic and extraembryonic structures.
TS13: chorioallantoic placenta	Present		4I

Structure	Level	Pattern	Image	Note
TS28: decidua basalis	Present	Regionally restricted	4J	Expression is limited to the basal zone adjacent to the myometrium.
TS13: trophoblast giant cell	Weak		4J

Structure	Level	Pattern	Image	Note
TS20: labyrinthine zone	Strong		6A
TS28: decidua basalis	Strong		6A
TS20: spongiotrophoblast	Ambiguous		6A	Expression is either faint or absent.

Structure	Level	Pattern	Image	Note
TS28: decidua	Present		6B	Uterine natural killer (uNK) cells are not stained.

Structure	Level	Pattern	Image	Note
TS20: trophoblast giant cell	Present		6E

Structure	Level	Pattern	Image	Note
TS20: spongiotrophoblast	Absent		6G
TS28: decidua	Present		6G