Representative images (upper panel) showing immunohistochemical localization of of Sorcin, Cofilin-1, Apo-A1 and Ran in early-secretory (LH+2) and mid-secretory (LH+7) phase endometrium from women with unexplained infertility. Lower panel shows image analysis of Sorcin, Cofilin-1, Apo-A1 and Ran in early-secretory and mid-secretory phase endometrium of infertile women. Staining intensity of all these proteins were quantified by image analysis software Image-Pro Plus 4.0 (Maryland, USA). Anti-mouse/anti-goat IgG was used as negative control and shown in inset (Fig. 4 A, E, I, M). Magnification X 400, bar = 25 µm, p-values are (a) p<0.001, (b) p<0.01 and (c) p<0.05 versus early-secretory phase (LH+2). Values are expressed as mean ± SE. n = 4 in all the groups. S = stroma, GE = Glandular epithelium, LE = Luminal epithelium.