CD274 and neoplasm: 1) using the in vivo tumor FLT as the PD-L1 specific component τT=0.8ns and the normal tissue FLT as the nonspecific τNS=0.7ns, respectively, to recover the decay amplitude maps (parameter related to the fluorophore concentration) for the PD-L1 specific aT (Fig. 2h) and nonspecific aNS (Fig. 2i) components.