3732
PAGN could not be detected in urine or blood in any of the rats which may explain why OP treatment only reduced arterial ammonia transiently .
 Chemical: PAGN; Chemical: ammonia
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: PAGN; Chemical: ammonia