Unusual particles in human plasma from leukemia and lymphosarcoma.

Plasma of 2 patients out of 255 with either leukemia or lynlphosarcoma yielded large numhers of 10 and 25 m!, particles in phosphotungstate negatively stained prepal·ations. For I of the 2, repeated sampling over a period of months showed continuing high particle incidence until death. The particles were unlike any found in a survey of over 300 human plasma samples.-Nat Cancer Inst Monogl' 21: 389-394, 1966.