has part has part has_part characteristic of part of has modifier leukocyte migration abnormal leukocyte migration enhanced leukocyte migration nvasilevsky MP:0020213 enhanced leucocyte migration enhanced ability of blood leukocytes to move within or between different tissues and organs of the body by binding to high endothelial venules (HEV), then tethering and rolling along the luminal aspects of HEV abnormal increased rate