Fig. 4

Tight junction formation between porcine and human ECs. (A) Immunofluorescence image depicting claudin (green) in HUVECs and SUVECs stained with PKH 26 (red). Nuclei were stained with DAPI (blue). (B) Immunofluorescence image illustrating claudin (green) in HUVECs and differentiated pECs stained with PKH 26 (red). Nuclei was stained with DAPI (blue). Scale bar = 20 µm.