Fig. (4) Effect of RSV on neutrophil apoptosis in plasma: Percoll purified and ultra purified cells at 8 (A), 12 (B) and 24 (C) hours post infection. Data are presented as mean values, with error bars indicating the standard error, of 5 independent experiments on independent donors. Levels of significance are shown as *, p<0.05; **, p<0.01; ***, p<0.001; ns = not statistically significant.