Table 1. Immunohistochemical localization of PGRMC1 in the reproductive tracts during estrous cycle. PGRMC1 is indicated as intense (+) weak (±) or negative signal in the different organs.

	Estrous cycle
	Follicular phase		Luteal phase
Tissue/cell type	Cytoplasm	Nucleus	Cytoplasm	Nucleus
Ovary follicle
Oocyte	±	+	±	+
Granulosa cells	+	+	+	+
Theca cells	+	+	+	+
Endothelial cells	+	+	+	+
Stromal tissue
Stromal cells	±	±	±	±
Endothelial cells	+	+	+	+
Germinal epithelium	+	+	+	+
Corpus luteum
Luteal cells	±	±	+	±
Endothelial cells	+	+	+	+
Oviduct
Epithelial cells	+	+	+	+
Stromal cells	±	±	±	±
Muscle layer cells	+	+	+	+
Endothelial cells	+	+	+	+
Uterus
Luminal epithelial cells	+	+	+	+
Glandular epithielial cells	+	+	+	+
Stromal cells	±	±	±	±
Muscle layer cells	+	+	+	+
Endothelial cells	+	+	+	+