Observations of various living blood cells by tissue culture of the bone marrow

(1) The movement of the blood cells in the bone marrow was classified into 9 types. (2) The characteristics of moving types are so distinct according to the kinds of blood cells, that the differential diagnosis of the cells by moving types is easily and certainly made. In this way, (by the kind of blood cells), we have classified leukemia, as is described in our other articles. (3) The phagocytosis and vital staining of the blood cells in the bone marrow is different in degree and mode, according to the kind of blood cells, and thus becomes valuable ground for the differential diagnosis of the cells.