Processes are provided for the synthesis of the human T-antigenic determinant 2-acetamido-2-deoxy-3-O-(.beta.-D-galactopyranosyl)-.alpha.-D-galactopyran oside containing an .alpha.-O-glycosidically linked bridging arm O--(CH.sub.2).sub.n COR. The determinant is coupled to carrier molecules to form artificial T-antigens, and to insoluble supports to form T-immunoadsorbents. The artificial T-antigen is shown to elicit a delayed type hypersensitivity reaction as a diagnostic for the presence of cancer in humans.
提供了用于合成人类T-抗原决定因子2-乙酰胺基-2-脱氧-3-O-(β-
D-半乳糖苷)-α-
D-半乳糖苷的过程,其中包含一个α-O-糖苷键连接的桥接臂O-(
CH2)nCOR。该决定因子与载体分子偶联形成人工T-抗原,并与不溶性支持物质结合形成T-免疫吸附剂。已证明人工T-抗原能引起延迟型超敏反应,作为诊断人类癌症存在的指标。