Figure 3.

Blood smear from a patient with thrombocytopenic thrombotic purpura, due to deficiency of ADAMTS-13. The arrows indicate schistocytes generated by mechanical damage to red cells. Also note the reduced number of platelets, indicating thrombocytopenia. Giemsa staining, ×40. Courtesy of Dr J van der Lelie, Academic Medical Center, Amsterdam, the Netherlands.