9233
The mild renal damage caused by gentamicin was markedly magnified in rats having received UN chronically , which was evident both at the functional and histological level .
 Chemical: gentamicin
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: gentamicin