Peripheral smear from thrombocytopenic members.

Peripheral blood smears were stained with Wright-Giemsa stain and examined by light microscopy to determine platelet morphology. These photomicrographs demonstrate macrothrombocytes (A) (original magnification, 1000 ×) and a rare circulating megakaryocyte fragment (B) (original magnification, 200 ×). Red blood cell morphology in these images is distorted in part due to dyserythropoiesis and partially because of the age of the sample when smears were made (24 hours).