The authors of the article "Imaging of Delayed-Type HypersensitivityReaction by PET and 18F-Galacto-RGD" (J Nucl Med. 2005;46:184189)add the following acknowledgment: "Authors Bernd J. Pichler,PhD, Manfred Kneilling, MD, Roland Haubner, PhD, Martin Röcken,MD, and Wolfgang A. Weber, MD, contributed equally to this work."