Figure 7.

Myeloid leukemia involvement of liver. There are multifocal infiltrates of neoplastic cells predominantly involving the portal triads (a, hematoxylin and eosin, ×4 objective lens). Infiltrating cells surrounding hepatic portal veins are strongly myeloperoxidase positive (b and d, ×20 and × 40 objective lens, respectively). (c) Corresponding negative control (myeloperoxidase-specific primary antibody is substituted with normal rabbit immunoglobulin on a serial step section, ×40 objective lens) for image in d