It should be noted that unlike a clinical study of sarcoidosis patients [10], in our granuloma model, 18F-FAMT accumulated in the granulomas at 60 min p.i. Because the kinetics of 18F-FAMT depends on both increased local blood flow and LAT-1, one possible explanation for this difference is the effect of the concentration of radioactivity in the blood. The gene discussed is SLC7A5; the disease is sarcoidosis.