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NAG是N—乙酰—β—D—氨基葡萄糖苷酶,广泛分布于肾近曲小管上皮细胞内,近年来,以其做为肾移植术后排异现象及泌尿系感染最敏感的指标。GAL是β-D—半乳糖苷酶,存在于新生的溶酶体
NAG is N-acetyl-β-D-glucosaminidase, which is widely distributed in renal proximal tubule epithelial cells. In recent years, NAG is the most sensitive index of renal allograft rejection and urinary tract infection. GAL is a beta-D-galactosidase present in the nascent lysosome