Sectioned. Tissue sections were stained by a standard immunoperoxidase technique of avidin-biotinylated enzyme complex for the expression of VWF with a purified polyclonal rabbit antibody to VWF and, for the expression of MPO, with a purified polyclonal rabbit antibody to MPO.Statistical Analysis. Experimental conditions were compared byHMVEC and EGM-2 medium were obtained from Clonetics (Walkersv