Studies of Cell Source of Macrophages from Human Blood in Slide Chambers.

Abstract
In special slide chambers the number of macrophages formed closely paralleled the number of monocytes present in the initial suspension. When most monocytes were removed by glass beads very few macrophages formed. When lymphocytes were removed by irradiation the number of macrophages formed corresponded to the number of monocytes at the start. Intermediate stages between lymphocytes and macrophages were never observed, whereas cells intermediate between monocyte and macrophage were regularly seen.