methods for early detection that are rapid and low cost. TF-antigen is a tumor-associated
antigen displayed on cell surface proteins of a high percentage of human carcinomas. Here
we present a fluorometric bioassay for TF-antigen (galactose-β-(1→ 3)-N-acetyl-d-
galactosamine) that utilizes quantum dot (QD) technology coupled with magnetic beads for
rapid detection of TF-antigen at high sensitivity (10–7 M range). In the competitive bioassay …