PGR and benign prostatic hyperplasia: Likewise, there was lower Pr immunostaining in the inter-implantation site luminal and glandular epithelium of BPH/5 females, while no difference was found between the BPH/5 and C57 sub-epithelial endometrial stroma (Figure 4c,d, US p < 0.05, GE and LE p < 0.001).