Fig. 1From: Establishment and evaluation of a PRRSV-sensitive porcine endometrial epithelial cell line by transfecting SV40 large T antigenCharacterization of primary porcine endometrial epithelial cells (PECs). a Primary PECs were observed after a 7 d culture under a light microscope (100×). b Primary PECs were cultured for 7 d and average cell numbers were counted on different days. c The immunofluorescence study for cytokeratin CK18, ERɑ and PRBack to article page