20961
In the present study , we investigated the impact of 1 . 0 % ropivacaine on the ultrastructure and proteome of the rat spinal cord .
 Chemical: ropivacaine
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: ropivacaine