3718
The spinal cords of the animals that received bupivacaine , low pH normal saline ( pH 3 . 0 ) , or normal saline did not show abnormal findings .
 bupivacaine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 bupivacaine