4681
Significant dose - response associations between total NNAL , free NNAL , the ratios of free NNAL / total NNAL and NNAL - Gluc / total NNAL and UC risk were observed .
 Chemical: NNAL; Chemical: NNAL; Chemical: NNAL; Chemical: NNAL; Chemical: NNAL - Gluc; Chemical: NNAL
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: NNAL; Chemical: NNAL; Chemical: NNAL; Chemical: NNAL; Chemical: NNAL - Gluc; Chemical: NNAL