Hematology following conditioning with 211At-anti-CD45 monoclonal antibody (MAb). Dogs received between 0.40 and 0.49 mCi/kg of body weight on day −2, and complete blood counts were monitored for the first 100 days. All dogs experienced neutropenia, thrombocytopenia, and lymphocytopenia with a median neutrophil nadir of 9 cells/μl (A), median platelet nadir of 1,500 PTL/μl (B), and median lymphocyte nadir of 88 cells/μl (C). Color images available online at www.liebertpub.com/hum