There is provided a method of detecting in a sample the presence of an anti-M and/or anti-A and/or anti-C/Y antibody, the method comprising contacting the sample with a diagnostic conjugate provided according to the invention, comprising an oligosaccharide which comprises at least two units of 4,6-dideoxy-4-acylamido-α-pyranose and comprising at least one -(1-3)- link between adjacent 4,6-dideoxy-4-acylamido-α-pyranose units, in which the carbon at position 5 in the pyranose is linked to an R group, where R is independently selected from —CH2OH, —H or an alkyl group having at least one C atom, the oligosaccharide being covalently linked to a non-saccharide molecule or to a surface.
本发明提供了一种检测样品中是否存在抗-M 和/或抗-A 和/或抗-C/Y
抗体的方法,该方法包括将样品与根据本发明提供的诊断共轭物接触,该诊断共轭物由
寡糖组成,
寡糖包括至少两个 4,6-二脱氧-4-酰
氨基-α-
吡喃糖单元,相邻的 4、6-二脱氧-4-酰
氨基-α-
吡喃糖单元之间至少有一个-(1-3)-连接,其中
吡喃糖第 5 位的碳与一个 R 基相连,其中 R 独立地选自-CH2OH、-H 或至少有一个 C 原子的烷基,
寡糖与非糖分子或表面共价连接。