^99mTc activity in the spleen, liver, and lung. Count rates for the whole spleen, whole liver, and a portion of right lung were obtained from gamma camera imaging data, normalized to a standard injected activity, and plotted against time after injection. Each panel shows activity over an organ for subjects 1, 3, and 5, where ^99mTc-coated cells were coated with Fog-1 G1 (closed symbols) and for subject 2 and 4, where ^99mTc-labeled cells were coated with Fog-1 G1Δnab (open symbols).