Unique stimuli and consequences for anti-inflammatory phagocyte receptors in acute rejection versus CAV. a Ischemia-reperfusion (I/R) of the allograft may stimulate shedding of anti-inflammatory receptors(Y) on macrophages (MΦs), contributing to activation of T cells and B cells and neutrophils (PMNs) and acute rejection and delayed CAV. b Unknown stimuli during chronic rejection, including from events triggered acutely after transplant, may similarly lead to shedding of anti-inflammatory receptors and activation of features of CAV. EC endothelial cell, Mo monocyte, ICAM intercellular adhesion molecule