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Figure 1 Leukocyte CD11b expression. Peripheral blood samples obtained pre- and postangioplasty were compared (paired t test). (a) Neutrophil CD11b expression in the control group increased (n = 25, p < 0.0001), while neutrophil CD11b expression decreased in the chimeric 7E3 group (n = 25, p < 0.0001). Postprocedure, neutrophil CD11b expression was lower in the chimeric 7E3 Fab group than the control group (p < 0.0001). (b) Monocyte CD11b expression in the control group increased (n = 17, p < 0.05), while monocyte CD11b expression decreased in the chimeric 7E3 group (n = 17, p < 0.05). Postprocedure, monocyte CD11b expression was lower in the chimeric 7E3 Fab group than in the control group (p < 0.05).