has part has part has_part characteristic of part of has modifier leukocyte tethering or rolling abnormal leukocyte tethering or rolling decreased cell adhesion impaired leukocyte migration impaired leukocyte tethering or rolling reduced ability or inability in the transient adhesive interactions between leukocytes and endothelial cells lining blood vessels mediated primarily by selectins and which are typically the first step in cellular extravasation impaired leucocyte tethering or rolling MP:0020332 abnormal decreased rate