HAEMATOLOGY Leucocytosis of 70,000 cells/µl. The type of leucocytes predominating in the blood smear is shown The erythron and platelets are unremarkable; moderate neutropaenia. What are the cells on the blood smear and give a morphological diagnosis as well as possible differentials. 2 What immunocytochemical markers would you apply to help identify more specifically the cells visible on the blood smear? Unknown cells in the blood smear