ERBB2 and neoplasm: In addition, the biodistribution of anti-HER2 Affibody (ZHER2:4)2, labeled with Astatine-211 (211At) using the precursor N-succinimidyl-p-(trimethylstannyl)benzoate, was evaluated in HER2+ SKOV3 tumor xenografted mice upon co-administration with l-lysine and Na-thiocyanate.