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β_2-微球蛋白(β_2-Microglobulin,β_2-M)是体内有核细胞,包括淋巴细胞产生的一种低分子量(分子量为11800)球蛋白。它很容易通过肾小球滤过,约99.9%在肾近曲小管中
β_2-Microglobulin (β_2-M) is a kind of low molecular weight (molecular weight 11800) globulin produced by lymphocytes in vivo. It is easy to pass through the glomerular filtration, about 99.9% in the renal proximal tubule