3957
The alpha 7 antagonist MLA , administered intrathecally , reversed PNU - 120596 ' s effects , confirming PNU - 120596 ' s action , in part , through central alpha 7 nAChRs .
 Chemical: MLA; Chemical: PNU - 120596; Chemical: PNU - 120596
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: MLA; Chemical: PNU - 120596; Chemical: PNU - 120596