Hi! Is it in PB or bone marrow? Are the children after chemotherapy? CD34+ cells can be present in low numbers in PB after chth. These CD34+ cells are CD38+ and weakly CD45+, did you test for that marker? Best wishes Anna Anna Porwit-MacDonald Haematopathology Lab. Karolinska Hospital Stockholm, Sweden > >to all: > >I am seeing populations of CD38 cells in patients (children) that have >low WBC's of <200. These are not positive for anything else (b or T) >they are however weak staining for CD45. > >Any Ideas?? > >Jim Houston > >
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