30388
As seen with phagocytotic microglia , the CB2 antagonist , AM630 , increased Iba - 1 positive microglia in the absence of URB597 treatment .
 Chemical: AM630; Chemical: URB597
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: AM630; Chemical: URB597