FIG. 1.
Extracellular release of LDH, indicative of cell lysis, from different cell populations incubated for 1 h with various concentrations of leukotoxin. (A) Comparative kinetics for different human peripheral blood leukocytes and the cancer cell line HL-60. (B) Kinetics of monocyte lysis at low leukotoxin concentrations. Mean values ± standard deviations of four experiments are shown.