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BACKGROUND : Although an indicator of renal tubular dysfunction , an increased urinary N - acetyl - beta - D - glucosaminidase ( NAG ) activity might reflect increased lysosomal activity in renal tubular cells .
 Disease: renal tubular dysfunction
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: renal tubular dysfunction