Adult T-Cell Leukemia-Associated Antigen (ATLA): Detection of a Glycoprotein in Cell- and Virus-Free Supernatant

A glycoprotein of an apparent molecular mass of 46000, gp 46, was enriched by affinity chromatography from the virus-and cell-free culture medium of adult T-cell leukemia virus (ATLV) infected cells, gp 46 was specifically precipi­tated with sera from patients with adult T-cell leukemia known to react with the adult T-cell leukemia associated antigen (ATLA). Thus, gp 46 is a novel component of the ATLA antigen complex.