To the Editor: Currently, it is well established that monocytes are a heterogeneous type of
cell consisting of phenotypically and functionally distinct subpopulations found to be
numerically altered in blood in patients with a wide variety of disease conditions, such as
infection, autoimmunity, respiratory and cardiovascular diseases, and inflammatory
disorders. 1, 2 Thus, 3 subpopulations of circulating monocytic cells have been identified
based on expression of the CD14 LPS receptor and the CD16 low-affinity Fc IgG receptor:(1) …