2639
CCNU ( lomustine ) toxicity in dogs : a retrospective study ( 2002 - 07 ) .
 Chemical: CCNU; Chemical: lomustine; Disease: toxicity
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: CCNU; Chemical: lomustine; Disease: toxicity