3715
Of the 20 animals that received subarachnoid injection of 2 - chloroprocaine - CE seven ( 35 % ) developed hind - limb paralysis .
 2 - chloroprocaine - CE, paralysis
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 2 - chloroprocaine - CE, paralysis