1466
Both compounds displaced the mGlu 5 receptor antagonist radioligand , [ (3) H ] MPEP in vitro and , following oral administration reached brain concentrations sufficient to occupy hippocampal mGlu 5 receptors as measured in vivo by dose - dependent displacement from the hippocampus of intravenously administered MPEPy .
 Chemical: [ (3) H ] MPEP; Chemical: MPEPy
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: [ (3) H ] MPEP; Chemical: MPEPy