Accumulation of radiolabeled alpha fetoprotein in spontaneous mammary tumors in mice

: Radiolabelled alphafetoprotein (AFP) was selectively concentrated by spontaneous mammary carcinomas of the Mouse. External photoscans of Mice injected with 131I-AFP confirmed the significant accumulation of the protein in the tumors. These results prove the usefulness of AFP as a radiotracer for mammary carcinomas and represent a novel approach for tumor detection.