4353
MAP and HR were monitored before and after i . v . injections of either vehicle or 1 , 10 and 50 ng of AVP and 25 , 125 and 500 ng of ANP .
 Chemical: AVP
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: AVP