Characterisation of 6 or more leucocyte surface antigens by immunofluorescence or immunoenzyme techniques to assess lymphoid or myeloid cell populations for the diagnosis (but not monitoring) of an immunological or haematological malignancy, including a service described in 1 or more of items 71139, 71141 and 71143 (if performed), on 2 or more specimens of disaggregated tissues or 1 specimen of disaggregated tissue and 1 or more specimens of blood, CSF or serous fluid