highly significantP<0-001
The assay was performed on 39 normal donors who provided a mean value of 0'56?0 35 red cells/monocyte, whereas 32 patients with micrometastatic disease gave a mean of 0'92L0-51 red cells/monocyte, a difference which is highly significant (P<0-001) and indicates that monocytes from such patients show increased lytic- activity.