2739
A sensitive , reproducible , and quantitative microbead - based KIM - 1 ELISA was established , which requires only 10 mu l urine for triplicate determination with an assay range of 12 . 21 pg / ml to 50 ng / ml .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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