Al18F Labeling of Affibody Molecules

TO THE EDITOR: Glaser et al. recently described the labeling of 18F-ZHER2:2891-Cys-NOTA-(COOH)2-AlF (18F-12) ([1][1]) and compared it in vivo to the biodistribution of that Affibody (Affibody AB) with 18F attached to carbon and silicon, as well as an 111In-DOTA-Affibody. They reported that the Al18F