Fig. 1From: In vivo evaluation of two tissue transglutaminase PET tracers in an orthotopic tumour xenograft modelChemical structures and IC50 values of the TG2 inhibitors [11C]1, [18F]2, together with that of its in vivo formed metabolite [18F]M1 [19, 20]. The position of the carbon-11 label in [11C]1 is depicted by an asteriskBack to article page