Changes in circulating neutrophil activity in the recipents after reperfusion, as assessed by CD11b and L-selectin expression. A: CD11b expression, B: L-selectin expression. CD11b expression elevated significantly in the 24 h (closed square) and 18 h (closed circle) groups, compared with the 6 h group (closed triangle) 2 h after reperfusion (P < 0.05, respectively). L- selectin shed significantly in the 24 h (closed square) and 18 h (closed circle) groups, compared with the 6 h group (closed triangle) 1 h after reperfusion (P < 0.05, respectively). Results are the mean ± SD for each time point in each group (n = 6).