Figure 2 Immunohistochemical detection of basophils by 2D7 antibody in the bone marrow. Bone marrow sections were obtained from a patient without haematological neoplasm (control marrow) (A), one with chronic phase chronic myeloid leukaemia (CML) (B), one with accelerated phase CML (C), and one with accelerated CML and an excess of basophils (D). Slides were stained by the indirect immunoperoxidase technique.