[Blood of patients with acute leukemia increases the leukocyte count in the peripheral blood of mice].
Serum of 23 patients suffering from acute myeloid leukemia were given to groups of six mice (s.c. 0.6 ml); 3 and 5 days later the total number of leucocytes, granulocytes and lymphocytes was determined in the peripheral blood of mice. Serums of all patients caused significant increase of leucocytes in mice 3 and/or 5 days after the serum's application. In most cases the increase was caused by increased number of granulocytes and lymphocytes, and in 6 cases only by increase of granulocytes or only lymphocytes. This increase can also be thought of as a stimulation of leukocytopoiesis by increased concentration of hematopoetic growth factors in blood of those suffering from acute leukemia.