Fucoidan posttreatment. Shown is the effect of the selectin-binding carbohydrate, fucoidan, on rolling neutrophils (A) and adhering neutrophils (B). Fucoidan (100 μg/mL) was administered after 10 minutes of neutrophil perfusion (time = 0), because this was the time when neutrophil adhesion plateaued. *P < .05 relative to untreated neutrophils. ⁰P < .05 relative to time 0 value. (•) Untreated neutrophils; (□) fucoidan posttreated neutrophils.