M蛋白是单克隆免疫球蛋白异常增高的标志。当机体受到某些抗原物质的慢性刺激,B淋巴细胞系统处于持续负荷状态时,可产生不稳定细胞株,该株细胞脱离了正常基因控制,无限快速增殖,大量分泌结构与功能异常的球蛋白。因为这种异常成分多出现在以“M”为字头的多发性骨髓瘤(Myeloma)、巨球蛋白血症(Macroglo- M protein is an abnormal increase of monoclonal immunoglobulin markers. When the body is subject to chronic stimulation of certain antigenic substances, B lymphocyte system in a sustained load state, can produce unstable cell lines, the cells out of the normal gene control, unlimited rapid proliferation, a large number of secretory structure and dysfunction of globulin . Because of this abnormal component mostly appear in the “M” prefix of multiple myeloma (Myeloma), macroglobulinemia (Macroglo-