Figure 2.
Adoptively transferred NK cells persist in the peripheral circulation of patients. Blood was drawn from patients at multiple time points throughout treatment and was analyzed by the Hematology and Immunology Flow Cytometry Laboratories within the Department of Laboratory Medicine at the NIH Clinical Center to determine the absolute lymphocyte count (ALC) and absolute NK cell count (ANK). Normal NK cell counts range from 100 – 500 cells/μl as noted by the dashed lines on the graphs. Arrows indicate initiation of high dose IL-2 administration.