CD56 is a membrane glycoprotein which has multiple isoforms generated by alternative splicing from a single gene located on chromosome 11 (Costa, 1997). The core polypeptide is the 140 kDa isoform which can be variably glycosylated to produce mature species. The predominant isoform in NK and T cells is the transmembrane-anchored 140 kDa protein. In tissues, CD56 antigen is found in the cerebellum and cortex of the brain, and at neuromuscular junctions. This molecule is identical to the 140 kDa isoform of the neuronal cell adhesion molecule (N-CAM) (Poggi, 2002; Lanier, 1989). Additionally, CD56 is also present in certain large granular lymphocyte leukemias, small cell lung carcinomas, neural-derived tumors, myelomas, and myeloid leukemias (Poggi, 2002).，官网链接：https://www.sigmaaldrich.cn/product/mm/fcmab199p 默克 科研、开发、生产。 作为生命科学行业的全球领先供应商，我们致力于为科研、生物技术开发和生产，以及制药药物疗法开发和生产提供各类解决方案和服务。

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