Researchers at the National Institute on Aging (NIA) have developed a novel strategy for rendering weakly or non-immunogenic, shared (between self and tumor) antigens immunogenic, or able to produce an immune response. Further, they have created therapeutic polypeptides comprising tumor-associated embryonic antigens and chemoattractant ligands. Cancers targeted by these developments include breast, renal, lung, ovarian, and hematological cancers.