Fig. 3From: Unnatural amino acid substitutions to improve in vivo stability and tumor uptake of 68Ga-labeled GRPR-targeted TacBOMB2 derivatives for cancer imaging with positron emission tomographyIntracellular calcium efflux in PC-3 cells induced by GRPR-targeted ligands. Cells were incubated with DPBS or 50 nM of Ga-complexed GRPR-targeted ligand, [D-Phe6,Leu-NHEt13,des-Met14]Bombesin(6–14), bombesin, or ATPBack to article page