NRP1 and peripheral arterial disease: In immunohistochemical analysis of pDCs characterized by the markers CD304 and CD123, only very low cells numbers were detected in femoral plaques (3 pDCs/0.1 mm2 for both markers) of PAD patients with no difference to control arteries (3 CD123+ pDCs/0.1 mm2 and 4 CD304+ pDCs/0.1 mm2) as it has been formerly described [22].