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CBFCAs were performed using 10−3 and 10−6 M fMLP as chemotactic and purified neutrophils (A) and monocytes (B) at different concentrations. The number of attracted neutrophils and monocytes increased lineally with the starting number of cells. Significantly more leukocytes were attracted by 10−3 M fMLP than by 10−6 M fMLP in all the cases. Data shown are means±SD of four independent assays in triplicate. Significance was determined by T test.
