RT Journal Article SR Electronic T1 Histochemical similarities between newborn and leukaemic myeloid cells and their possible significance JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 458 OP 459 DO 10.1136/jcp.22.4.458 VO 22 IS 4 A1 Paul L. Wolf A1 Boris Silberberg A1 Samuel Albert A1 Jerome Horwitz A1 Elisabeth Von Der Muehill YR 1969 UL http://jcp.bmj.com/content/22/4/458.abstract AB The neutrophilic alkaline phosphatase activity of 40 newborns was determined and found to be frequently raised, similarly to a leukaemoid reaction. The newborn neutrophil has strong alkaline phosphatase activity and is unlike the myeloid leukaemia cell which has no alkaline phosphatase activity.