Figure 3
LC–MS/MS ion chromatograms (m/z = 121; [12C]i) for carrier PBR28 in arterial plasma sampled from a human subject injected intravenously with [11C]PBR28 for PET imaging. a1: baseline. Peaks a2 and a3: carrier PBR28 peaks at 10 min (71.8 pM) and 90 min (6.34 pM) after injection, respectively. Peak b in ion chromatogram (m/z = 125) is from the analogous transition in the internal standard, [13C,2H3]PBR28 (284 pM).
